Question

Let f(x) = 2x and g(x) = x. Find the value of (g ∘ f)(8). Option 1: 16 Option 2: 32 Option 3: 8 Option 4: 64

Answer 1

option 1

Explanation:

to evaluate (g ○ f )(8)

first evaluate f(8)

then substitute the value obtained into g(x)

f(x) = 2x

f(8) = 2 × 8 = 16

then

g(x) = x

g(16) = 16