Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 6 - Algebra: Equations and Inequalities - 6.1 Algebraic Expressions and Formulas - Exercise Set 6.1 - Page 349: 72


See below.

Work Step by Step

a) According to the line graph the proportion of students who anticipated a starting salary of $40000$ is $14\%$. b) Plugging in $s=40$ into the formula we get: $p=-0.01(40)^2+0.8(40)+3.7=-16+32+3.7=19.7$ This estimate is quite far off what we got in part a).
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