Back to Elementary Algebra 2e

1.2 Use the Language of Algebra

Variables and algebraic symbols, the order of operations, evaluating expressions, combining like terms, and turning English phrases into expressions.

Elementary Algebra 2e, 1.2 Use the Language of Algebra

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97 exercises

1.2 Exercise 1

Translate from algebra into English:

ⓐ 17≤2617 \leq 26 ⓑ 8≠17−38 \neq 17 - 3 ⓒ 12>27÷312 > 27 \div 3 ⓓ y+7<19y + 7 < 19

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1.2 Exercise 2

Translate from algebra into English:

ⓐ 14≤2714 \leq 27 ⓑ 19−2≠819 - 2 \neq 8 ⓒ 12>4÷212 > 4 \div 2 ⓓ x−7<1x - 7 < 1

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1.2 Exercise 3

Translate from algebra into English:

ⓐ 19≥1519 \geq 15 ⓑ 7=12−57 = 12 - 5 ⓒ 15÷3<815 \div 3 < 8 ⓓ y+3>6y + 3 > 6

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1.2 Exercise 4

Determine if each is an expression or an equation:

ⓐ 2(x+3)=102 \left(x + 3\right) = 10 ⓑ 4(y−1)+14 \left(y - 1\right) + 1 ⓒ x÷25x \div 25 ⓓ y+8=40y + 8 = 40

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1.2 Exercise 5

Determine if each is an expression or an equation: ⓐ 3(x−7)=273 \left(x - 7\right) = 27 ⓑ 5(4y−2)−75 \left(4 y - 2\right) - 7.

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1.2 Exercise 6

Determine if each is an expression or an equation: ⓐ y3÷14y^{3} \div 14 ⓑ 4x−6=224 x - 6 = 22.

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1.2 Exercise 7

Simplify: 34.3^{4} .

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1.2 Exercise 8

Simplify: ⓐ 535^{3} ⓑ 17.1^{7} .

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1.2 Exercise 9

Simplify: ⓐ 727^{2} ⓑ 05.0^{5} .

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1.2 Exercise 11

Simplify: ⓐ 12−5·212 - 5 \cdot 2 ⓑ (12−5)·2.\left(12 - 5\right) \cdot 2 .

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1.2 Exercise 12

Simplify: ⓐ 8+3·98 + 3 \cdot 9 ⓑ (8+3)·9.\left(8 + 3\right) \cdot 9 .

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1.2 Exercise 14

Simplify: 30÷5+10(3−2).30 \div 5 + 10 \left(3 - 2\right) .

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1.2 Exercise 15

Simplify: 70÷10+4(6−2).70 \div 10 + 4 \left(6 - 2\right) .

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1.2 Exercise 17

Simplify: 9+53−[4(9+3)].9 + 5^{3} - \left[4 \left(9 + 3\right)\right] .

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1.2 Exercise 18

Simplify: 72−2[4(5+1)].7^{2} - 2 \left[4 \left(5 + 1\right)\right] .

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1.2 Exercise 20

Evaluate 8x−3,8 x - 3 , when ⓐ x=2x = 2 and ⓑ x=1.x = 1 .

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1.2 Exercise 21

Evaluate 4y−4,4 y - 4 , when ⓐ y=3y = 3 and ⓑ y=5.y = 5 .

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1.2 Exercise 23

Evaluate x=3,x = 3 , when ⓐ x2x^{2} ⓑ 4x.4^{x} .

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1.2 Exercise 24

Evaluate x=6,x = 6 , when ⓐ x3x^{3} ⓑ 2x.2^{x} .

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1.2 Exercise 26

Evaluate 3x2+4x+13 x^{2} + 4 x + 1 when x=3.x = 3 .

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1.2 Exercise 27

Evaluate 6x2−4x−76 x^{2} - 4 x - 7 when x=2.x = 2 .

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1.2 Exercise 28

Identify the coefficient of each term: ⓐ 14y ⓑ 15x215 x^{2} ⓒ a.

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1.2 Exercise 29

Identify the coefficient of each term: ⓐ 17x17 x ⓑ 41b241 b^{2} ⓒ z.

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1.2 Exercise 30

Identify the coefficient of each term: ⓐ 9p ⓑ 13a313 a^{3} ⓒ y3.y^{3} .

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1.2 Exercise 31

Identify the like terms: y3,y^{3} , 7x2,7 x^{2} , 14, 23, 4y3,4 y^{3} , 9x, 5x2.5 x^{2} .

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1.2 Exercise 32

Identify the like terms: 9,9 , 2x3,2 x^{3} , y2,y^{2} , 8x3,8 x^{3} , 15,15 , 9y,9 y , 11y2.11 y^{2} .

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1.2 Exercise 33

Identify the like terms: 4x3,4 x^{3} , 8x2,8 x^{2} , 19, 3x2,3 x^{2} , 24, 6x3.6 x^{3} .

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1.2 Exercise 34

Identify the terms in each expression.

  1. ⓐ 9x2+7x+129 x^{2} + 7 x + 12
  2. ⓑ 8x+3y8 x + 3 y
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1.2 Exercise 35

Identify the terms in the expression 4x2+5x+17.4 x^{2} + 5 x + 17 .

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1.2 Exercise 36

Identify the terms in the expression 5x+2y.5 x + 2 y .

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1.2 Exercise 38

Simplify: 3x2+7x+9+7x2+9x+8.3 x^{2} + 7 x + 9 + 7 x^{2} + 9 x + 8 .

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1.2 Exercise 39

Simplify: 4y2+5y+2+8y2+4y+5.4 y^{2} + 5 y + 2 + 8 y^{2} + 4 y + 5 .

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1.2 Exercise 41

Translate the English phrase into an algebraic expression: ⓐ the difference of 14x214 x^{2} and 13 ⓑ the quotient of 12x and 2.

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1.2 Exercise 42

Translate the English phrase into an algebraic expression: ⓐ the sum of 17y217 y^{2} and 1919 ⓑ the product of 77 and y.y .

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1.2 Exercise 43

Translate the English phrase into an algebraic expression: ⓐ Seventeen more than y ⓑ Nine less than 9x2.9 x^{2} .

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1.2 Exercise 44

Translate the English phrase into an algebraic expression: ⓐ Eleven more than xx ⓑ Fourteen less than 11a.11 a .

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1.2 Exercise 45

Translate the English phrase into an algebraic expression: ⓐ 13 more than z ⓑ 18 less than 8x.

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1.2 Exercise 46

Translate the English phrase into an algebraic expression: ⓐ five times the sum of m and n ⓑ the sum of five times m and n.

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1.2 Exercise 47

Translate the English phrase into an algebraic expression: ⓐ four times the sum of p and q ⓑ the sum of four times p and q.

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1.2 Exercise 48

Translate the English phrase into an algebraic expression: ⓐ the difference of two times x and 8, ⓑ two times the difference of x and 8.

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1.2 Exercise 49

The length of a rectangle is 6 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.

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1.2 Exercise 50

The length of a rectangle is 7 less than the width. Let w represent the width of the rectangle. Write an expression for the length of the rectangle.

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1.2 Exercise 51

The width of a rectangle is 6 less than the length. Let l represent the length of the rectangle. Write an expression for the width of the rectangle.

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1.2 Exercise 52

June has dimes and quarters in her purse. The number of dimes is three less than four times the number of quarters. Let q represent the number of quarters. Write an expression for the number of dimes.

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1.2 Exercise 53

Geoffrey has dimes and quarters in his pocket. The number of dimes is eight less than four times the number of quarters. Let q represent the number of quarters. Write an expression for the number of dimes.

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1.2 Exercise 54

Lauren has dimes and nickels in her purse. The number of dimes is three more than seven times the number of nickels. Let n represent the number of nickels. Write an expression for the number of dimes.

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1.2 Exercise 55

Translate from algebra to English.

16−916 - 9

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1.2 Exercise 57

Translate from algebra to English.

28÷428 \div 4

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1.2 Exercise 59

Translate from algebra to English.

(2)(7)\left(2\right) \left(7\right)

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1.2 Exercise 61

Translate from algebra to English.

14<2114 < 21

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1.2 Exercise 63

Translate from algebra to English.

36≥1936 \geq 19

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1.2 Exercise 65

Translate from algebra to English.

y−1>6y - 1 > 6

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1.2 Exercise 67

Translate from algebra to English.

2≤18÷62 \leq 18 \div 6

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1.2 Exercise 69

Determine if each is an expression or an equation.

9·6=549 \cdot 6 = 54

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1.2 Exercise 71

Determine if each is an expression or an equation.

5·4+35 \cdot 4 + 3

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1.2 Exercise 73

Determine if each is an expression or an equation.

x+9x + 9

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1.2 Exercise 75

Simplify each expression.

535^{3}

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1.2 Exercise 77

Simplify each expression.

282^{8}

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1.2 Exercise 79

Simplify using the order of operations.

ⓐ 3+8·53 + 8 \cdot 5 ⓑ (3+8)·5\left(3 + 8\right) \cdot 5

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1.2 Exercise 81

Simplify using the order of operations.

23−12÷(9−5)2^{3} - 12 \div \left(9 - 5\right)

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1.2 Exercise 83

Simplify using the order of operations.

3·8+5·23 \cdot 8 + 5 \cdot 2

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1.2 Exercise 85

Simplify using the order of operations.

2+8(6+1)2 + 8 \left(6 + 1\right)

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1.2 Exercise 87

Simplify using the order of operations.

4·12/84 \cdot 12 / 8

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1.2 Exercise 89

Simplify using the order of operations.

(6+10)÷(2+2)\left(6 + 10\right) \div \left(2 + 2\right)

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1.2 Exercise 91

Simplify using the order of operations.

20÷4+6·520 \div 4 + 6 \cdot 5

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1.2 Exercise 93

Simplify using the order of operations.

32+723^{2} + 7^{2}

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1.2 Exercise 95

Simplify using the order of operations.

3(1+9·6)−423 \left(1 + 9 \cdot 6\right) - 4^{2}

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1.2 Exercise 97

Simplify using the order of operations.

2[1+3(10−2)]2 \left[1 + 3 \left(10 - 2\right)\right]

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1.2 Exercise 99

Evaluate the following expressions.

7x+87 x + 8 when x=2x = 2

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1.2 Exercise 101

Evaluate the following expressions.

x2x^{2} when x=12x = 12

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1.2 Exercise 103

Evaluate the following expressions.

x5x^{5} when x=2x = 2

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1.2 Exercise 105

Evaluate the following expressions.

x2+3x−7x^{2} + 3 x - 7 when x=4x = 4

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1.2 Exercise 107

Evaluate the following expressions.

(x−y)2\left(x - y\right)^{2} when
x=10,y=7x = 10 , y = 7

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1.2 Exercise 109

Evaluate the following expressions.

a2+b2a^{2} + b^{2} when a=3,b=8a = 3 , b = 8

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1.2 Exercise 111

Evaluate the following expressions.

2l+2w2 l + 2 w when
l=15,w=12l = 15 , w = 12

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1.2 Exercise 113

Identify the coefficient of each term.

8a

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1.2 Exercise 115

Identify the coefficient of each term.

5r25 r^{2}

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1.2 Exercise 117

Identify the like terms.

x3,8x,14,8y,5,8x3x^{3} , 8 x , 14 , 8 y , 5 , 8 x^{3}

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1.2 Exercise 119

Identify the like terms.

9a,a2,16,16b2,4,9b29 a , a^{2} , 16 , 16 b^{2} , 4 , 9 b^{2}

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1.2 Exercise 121

Identify the terms in each expression.

15x2+6x+215 x^{2} + 6 x + 2

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1.2 Exercise 123

Identify the terms in each expression.

10y3+y+210 y^{3} + y + 2

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1.2 Exercise 125

Simplify the following expressions by combining like terms.

10x+3x10 x + 3 x

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1.2 Exercise 127

Simplify the following expressions by combining like terms.

4c+2c+c4 c + 2 c + c

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1.2 Exercise 129

Simplify the following expressions by combining like terms.

7u+2+3u+17 u + 2 + 3 u + 1

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1.2 Exercise 131

Simplify the following expressions by combining like terms.

10a+7+5a−2+7a−410 a + 7 + 5 a - 2 + 7 a - 4

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1.2 Exercise 133

Simplify the following expressions by combining like terms.

3x2+12x+11+14x2+8x+53 x^{2} + 12 x + 11 + 14 x^{2} + 8 x + 5

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1.2 Exercise 135

Translate the phrases into algebraic expressions.

the difference of 14 and 9

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1.2 Exercise 137

Translate the phrases into algebraic expressions.

the product of 9 and 7

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1.2 Exercise 139

Translate the phrases into algebraic expressions.

the quotient of 36 and 9

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1.2 Exercise 141

Translate the phrases into algebraic expressions.

the sum of 8x and 3x

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1.2 Exercise 143

Translate the phrases into algebraic expressions.

the quotient of y and 3

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1.2 Exercise 145

Translate the phrases into algebraic expressions.

eight times the difference of y and nine

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1.2 Exercise 147

Translate the phrases into algebraic expressions.

Eric has rock and classical CDs in his car. The number of rock CDs is 3 more than the number of classical CDs. Let c represent the number of classical CDs. Write an expression for the number of rock CDs.

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1.2 Exercise 149

Translate the phrases into algebraic expressions.

Greg has nickels and pennies in his pocket. The number of pennies is seven less than twice the number of nickels. Let nn represent the number of nickels. Write an expression for the number of pennies.

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1.2 Exercise 151

Car insurance Justin’s car insurance has a $750 deductible per incident. This means that he pays $750 and his insurance company will pay all costs beyond $750. If Justin files a claim for $2,100.

  1. ⓐ how much will he pay?
  2. ⓑ how much will his insurance company pay?
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1.2 Exercise 153

Explain the difference between an expression and an equation.

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1.2 Exercise 155

Explain how you identify the like terms in the expression 8a2+4a+9−a2−1.8 a^{2} + 4 a + 9 - a^{2} - 1 .

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Adapted from Elementary Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Elementary Algebra 2e. Imported at revision 77a933c.