Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 8 - Section 8.2 - Solving Quadratic Equations by the Quadratic Formula - Exercise Set - Page 494: 85


32 degrees

Work Step by Step

We are given: $$y=3x^2-18x+56$$ Where x is the day and y is the temperature. We plug in 4 to find: $$y=3(4)^2-18(4)+56$$ This gives y=32 So our estimate was very close.
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