Question

Let f(x) = -4x + 7

and
g(x) = 2x - 6

find (g•f)(1)

• 0

• -4

• 23

•3

Answer 1

g(x) = 2x-6

f(x) = -4x +7

(g•f)(x) = g(f(x))

= 2(f(x)) - 6

= 2 ( -4x+7) -6

= -8x + 14 -6

= -8x +8

now

(g•f)(1) = -8(1) + 8= -8+8

= 0

so option a is answer