Answer:
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:
[tex]f(-2) = -2 (-2)^{3} -3\\f(-2) = -2(-8)-3\\f(-2) = 16 - 3 \\f(-2) = 13[/tex]
Therefore, [tex]f(-2) = 13[/tex].
Next, let's try to find g(4). We have to substitute 4 for every x in the function g and simplify:
[tex]g (4) = -2(4) - 1\\g(4) = -8-1\\g(4) = -9[/tex]
Therefore, [tex]g (4) = -9.[/tex]
