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

Asked 6 months ago

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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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answered 6 months ago