lalamcg115
Answered

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

A. -89

B. -111

C. -411

D. -51

Sagot :

pakasmojica4
You should try C I’m not sure but try I guess!
maddymcg408

Answer:

B. -111

Step-by-step explanation:

y = -4x^2 - 3x + 4

x = 5

y = -4(5)^2 - 3(5) + 4

y = -4(25) - 15 + 4

y = -100 - 15 + 4

y = -111

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Please, write -4x^2 (not 04x2).

Then the quadratic model is y = -4x^2 - 3x + 4.

Now substitute 5 for x:  y(5) = -4 (5)^2 - 3(5) + 4

Simplifying,                     y(5) = -4(25) - 15 + 4 = -100 - 11 = -111.

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