Question

25) If f(x) = 2x-3 and g(x) = 2x + 5, what is the value of (g • f)(4)?

A) 3
B) 6
C) 3.5

Answer 1

(g • f) (4) = 15

Explanation:

Here, f(x) = 2x -3

g(x) = 2x +5

Now, (g • f)(4) = g (f(4)) = g(2(4) -3) = g(5)

now, g(5) = 2 (5) + 5 = 15

So, (g • f) (4) = 15