Pls help me. I'm lost

f(-2) = 13

g(4)  = -9

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:

Therefore, .

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

Therefore,