Respuesta :
Answer:
21.
Step-by-step explanation:
f(4) is the value of f(x) when x = 4 so the answer is:
4^2 + 2*4 - 3
= 16 + 8 - 3
= 21.
Answer:
f(x)=21
Step-by-step explanation:
So the equation sad that the f(x) is equal to 4. Means the x is equal to 4.
If you plug in 4:
x^2+2x-3
4^(2)+2(4)-3
16+8-3
=21
The answer is 21.
