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Back to 8.9 Use Direct and Inverse Variation

8.9 Exercise 49

Avg difficulty 2.5

Write an inverse variation equation to solve the following problems.

The fuel consumption (mpg) of a car varies inversely with its weight. A Toyota Corolla weighs 2800 pounds and gets 33 mpg on the highway.

  1. ⓐ Write the equation that relates the mpg to the car’s weight.
  2. ⓑ What would the fuel consumption be for a Toyota Sequoia that weighs 5500 pounds?

OpenStax Elementary Algebra 2e, 8.9 Use Direct and Inverse Variation, exercise 49

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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.