Question

Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f o g)(-5)

A.
23

B.
3

C.
-53

D.
-9

Answer 1

@DJ♬Øϟϟ¥

Answer 2

(f o g)(-5) = f(g(-5)

can you take it on from there?

Answer 3

No i have no idea

Answer 4

Yes So first find g(-5) by replacing x by -5 in g(x)

So we get g(-5)= -4(-5) + 3 = 20 + 3 = 23 So g(-5)= 23
Since we know above formula f(g(-5))= f(23)= -2(23) - 7 = -53

Answer 5

okay thank you ! ^_^