F1 (mi/gal) 30 + 20 + 10 +++ + 10 20 30 40 50 60 70 v (mi/h)

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter1: Introduction To Algebra
Section1.5: Translating Sentences Into Equations
Problem 31WE
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Question

The graph (from the US Department of Energy) shows how
driving speed affects gas mileage. Fuel economy F is measured
in miles per gallon and speed is measured in miles
per hour.
(a) What is the meaning of the derivative F'(v) ?
(b) Sketch the graph of F'(v) .
(c) At what speed should you drive if you want to save on
gas?

F1 (mi/gal)
30 +
20 +
10
+++
+
10 20 30 40 50 60 70 v (mi/h)
Transcribed Image Text:F1 (mi/gal) 30 + 20 + 10 +++ + 10 20 30 40 50 60 70 v (mi/h)
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