Question

PLEASE HELP

Suppose that the functions fand g are defined for all real numbers x as follows.
f(x) = 5x
g(x)=4x-4
Write the expressions for (g.f)(x) and (g-f)(x) and evaluate (g+f)(2).
(g•f)(x) =
(g-f)(x) =
(g+r) (2)=

Answer 1

(g•f)(x) = (4x - 4) • (5x)
= 20x^2 - 16

(g - f)(x) = (4x - 4) - (5x)
= (-1x) - 4
= -x -4

(g + f)(2) = (4(2) - 4) + (5(2))
= 4 + 10
= 14