Question

B. Find (fºg)(x), (gºf)(x), and (fºg)(3).
4. f(x) = 2x, g(x) = x + 5

a.(fºg)(x)
b. (gºf)(x)
c. (fºg)(3)​

Answer 1

Answer:

(a). 2x + 10; (b). 2x + 5 (c). 16

Step-by-step explanation:

f(x) = 2x and g(x) = x + 5

(a). (f ° g)(x) = f(g(x)) = 2(x + 5) = 2x + 10

(b). (g°f)(x) = g(f(x)) = (2x) + 5 = 2x + 5

(c). (f ° g)(x) = 2(3) + 10 = 16