Question

Let f(x) = x - 2 and g(x) = x2 - 7x - 9. Find f(g(-1)).

Answer 1

Solve for g(-1) first what do you get?

Answer 2

-3

Answer 3

now plug that into f(x)

Answer 4

-5

Answer 5

check your answer for g(x)

Answer 6

sorry but i keep making the same mistake

Answer 7

That's how we learn. I do the same thing

Answer 8

well i got -3 again

Answer 9

(-1) squared = 1
-7 * -1 = 7
-9 = -9
Thus g(x) = -1 Correct?

Answer 10

Okay i see ,i was messing up on squaring -1

Answer 11

Good job..When working functions embedded in other functions solve from the inside to the outside.