Question

Let f(x) = 3x + 2. If f(x) = 11, find x.

Answer 1

x=3

Explanation:

If f(x)=11, then 11=3x+2.

Subtract 2 on both sides of the equation.

11-2=3x+2-2

9=3x

Divide on both sides by 3

9/3 = 3x/3

3=x