Question

Let f(x)=4x+7 and g(x)=3x-5. find (fog)(-4)

A. -9
B. -61
C. -32
D. -17

Answer 1

B

Explanation:

To evaluate (f ￮ g)(- 4), first evaluate g(- 4) then substitute this value into f(x)

g(- 4) = 3(- 4) - 5 = - 12 - 5 = - 17, then

f(- 17) = 4(- 17) + 7 = - 68 + 7 = - 61 → B