Answer
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.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
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
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