Question

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

Answer 1

68. the image shows the work

Answer 2

74

Explanation:

fg(x)=f[g(x)]

=f(-4x+7)

=3(-4x+7)+5

=-12x+26

When x=-4,

fg(-4)=-12(-4)+26

=74