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10.1 Exercise 84

Avg difficulty 2.5

Fuel Efficiency The fuel efficiency (in miles per gallon) of a bus going at a speed of xx miles per hour is given by the polynomial −1160x2+12x.- \frac{1}{160} x^{2} + \frac{1}{2} x . Find the fuel efficiency when x=40mph.x = 40 \text{mph}.

OpenStax Prealgebra 2e, 10.1 Add and Subtract Polynomials, exercise 84

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