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3 years ago

Evaluate the function. f(x) = -4x^2+9Find f(-3)

Mathematics

2 answers:

Svetlanka [38]3 years ago

5 0

Answer:

-27

Step-by-step explanation:

f(x) = -4x² + 9
f(-3) = -4(-3)² + 9
f(-3) = -4(9) + 9
f(-3) = -36 + 9
f(-3) = -27

svetlana [45]3 years ago

4 0

Answer:

$f(-3)=-27$

Step-by-step explanation:

So we have the function:

$f(x)=-4x^2+9$

And we want to find f(-3).

So, let's substitute -3 for x. Therefore:

$f(-3)=-4(-3)^2+9$

Square:

$f(-3)=-4(9)+9$

Multiply:

$f(-3)=-36+9$

Add:

$f(-3)=-27$

And we're done!

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Answer:

Option OD - 9

Step-by-step explanation:

Given : On the cardiac ward of a local hospital, there are 7 nursing assistants. The seven assistants have 7, 8, 5, 9, 10, 10, and 14 patients, respectively, that they assist.

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