Question

Function Help Please

Answer 1

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

-21

-3

3

21

Answer 2

g(-1)=?

Answer 3

plug in -1 into function g
and then plug that answer into function f

Answer 4

this one means find g(-1)
then use that number to replace x in f(x)

Answer 5

g(-1)=(-1)^2-7(-1)-9
g(-1)=1+7-9
g(-1)=-1

Answer 6

f(-1)=-1-2
f(-1)=-3
-3 is your answer

Answer 7

Now do f(-1)
f(-1)= (-1) -2
f(-1) = -3

Answer 8

So its B c:

Answer 9

This stuff is confusing to me but thank you.

Answer 10

The term f(g(-1)) means that you plug in -1 in place of x in g(x) and then you take g(-1) and plug that in place of x for f(x).

g(-1) = (-1)^2 - 7(-1) - 9
g(-1) = -2+7-9
g(-1) = -1

plug -1 (which is g(-1)) into f(x) in place of x.

f(-1) = -1 - 2
f(-1) = -3

Answer 11

I'll follow along with what you did

Answer 12

Ok I get what you did now.