PLEASE HELP!!!!! Use the Quadratic model y = -4x^2 - 3× + 4 to predict y if x equals 5. A. -411 B. -111 C. -89 D. -51

asked Nov 11, 2019 180k views

1 vote

PLEASE HELP!!!!!

Use the Quadratic model y = -4x^2 - 3× + 4 to predict y if x equals 5.

A. -411

B. -111

C. -89

D. -51

by Lowi

5.9k points

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2 votes

Plug in 5 for x, then simplify:

$y = - 4 {x}^(2) - 3x + 4 \\ y = - 4 {(5)}^(2) - 3(5) + 4 \\ y = - 100 - 15 + 4 \\ y = - 111$

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6 votes

The final answer is B!!!!! :)

Billyhole answered Nov 15, 2019

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