Question

Can anyone help me with these 3 problems?

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

a. -64
b.-61 <------ I think it's this one
c.-9
d.-32

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

a. 74
b. -7
c. 23 <----- I think it's this one
d. 35

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

a.-17 <---- I think it's this one
b.23
c.-5
d.-41


Help would be very appreciated!!!

Answer 1

the answer is on the paper
if there is something you don't understand, i will explain to you

Answer 2

I am attaching a picture. I hope you understand.