Question

For all values of x, f(x) = 2x and g(x) = x + 1
A) find f(3)
B) find gf(3)

Answer 1

To find f(3), substitute the value of x into the function f(x) = 2x. f(3) = 2(3) = 6.
To find gf(3), substitute the value of f(3) into the function g(x) = x + 1. gf(3) = f(3) + 1 = 6 + 1 = 7.

Step-by-step explanation:

A) To find f(3), substitute the value of x into the function f(x) = 2x.

f(3) = 2(3) = 6.

B) To find gf(3), substitute the value of f(3) into the function g(x) = x + 1.

gf(3) = f(3) + 1 = 6 + 1 = 7.

Answer 2

the correct answer is :

A) 2× 3 = 6

B) g(6) = 6 + 1 =7