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: 71


Shown below

Work Step by Step

(a) The graph assigns anticipated salary on the x-axis and the percentage of college students on the y-axis. From the provided graph, the desired value would be the point on the line curve whose x-coordinate 30. Consider the given graph and locate the point on the curve against the anticipated starting salary. This can be seen below: This shows the percentage of a college student as: $p=22%$ Thus, the percentage of the student is 22%. (b) Consider the equation as follows: $p=-0.01{{s}^{2}}+0.8s+3.7$ Now, substitute the value of $s$as $30 and find the value of$p$. p=-0.01{{s}^{2}}+0.8s+3.7 =-0.01( 30^2+0.8( 30)+3.7 =-9+24+3.7 =18.7% This shows the percentage of students who anticipated a starting salary of $30 thousand. Compare the calculated value with the estimated value from the part (a). It is done by subtracting both values. 22-18.7=3.3 =3.3% This shows that the calculated value of the formula is 3.3% less than the estimated value from the part (a).
Small 1566785826
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.