Question

If f(x) = 5x^2 − 4 and g(x) = x − 2, what is (f o g)(-3)?

Answer 1

igot f(x)=41 & g(x)=-5, but that isn't a choice for my answer?

Answer 2

(fog)(x) = f(g(x))
First evaluate g(-3) in g(x) = x - 2
Then the number you get from that substitute for x in
f(x) = 5x^2 - 4

Answer 3

k, i got 121

Answer 4

that is an answer

Answer 5

g(-3) = -3 - 2 = -5
f(-5) = 5(-5)^2 - 4 = 5(25) - 4 = 121

Answer 6

Thanks for your help again....i got to sign off now , but I greatly appreciate your help and instruction