Given f(x) = 4(3 – X), what is the value of f(-5)?

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Given f(x) = 4(3 – X), what is the value of f(-5)?

1 Answer

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Hi there.

To find the value of f(-5), we need to substitute x = -5 in the equation.

f( - 5 ) = 4(3 - ( - 5))

Now then, know the basic rules of multiplying in the negative.

When you multiply the negative with the negative, you will get the positive.

Thus, - (-5) = 5

f( - 5) = 4(3 + 5) \\ f( - 5) = 4(8)

Then distribute 4 inside.

f( - 5) = 32

Therefore, the answer is f(-5) = 32

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Dr. Elaina Mills
15.5k 3 10 26
answered 6 months ago