Answer
$\frac{38}{3}$
Work Step by Step
Step 1. Identify the given quantities, we have $a=-5, c=8, h=1$
Step 2. Use the formula, we have $Area=\frac{h}{3}(2ah^2+6c)=\frac{1}{3}(2(-5)(1)^2+6(8))=\frac{38}{3}$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 3 - Linear and Quadratic Functions - 3.4 Build Quadratic Models from Verbal Descriptions and from Data - 3.4 Assess Your Understanding - Page 155: 21
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