Question

Pls help me. I'm lost
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Answer 1

f(-2) = 13

g(4) = -9

Step-by-step explanation:

Whenever a question is asking you to find something like, in this example, f(-2) or g(4), you have to substitute whatever number is in the parentheses for every x in the function with that letter.

Let's try to find f(-2). We have to substitute -2 for every x in the function f and simplify:

`f(-2) = -2 (-2)^(3) -3\\f(-2) = -2(-8)-3\\f(-2) = 16 - 3 \\f(-2) = 13`

Therefore,
`f(-2) = 13`.

Next, let's try to find g(4). We have to substitute 4 for every x in the function g and simplify:

`g (4) = -2(4) - 1\\g(4) = -8-1\\g(4) = -9`

Therefore,
`g (4) = -9.`