Question

Let f(x) = 6x2 + 5 and g(x) = 3x - 5. Find g(f(0)).

A) 10
B) 75
C) 90
D) 155

Answer 1

The answer would be D) 155, assuming you meant 6x^2 + 5 for f(x)

Explanation:

1) Find g(0)

3(0)-5 = -5

2) Find f(-5)

6(-5)2 + 5 = 155

Thus the answer is 155.

Answer 2

A) 10

Explanation:

let x =0

f(0) = 6(0)^2 +5

f(0) = 5

now put 5 into g(x)

g(5) = 3(5) -5

g(5) = 15-5

g(5) =10

so g(f(0)) = g(5) = 10