Given the function f(x) = 2x + 8, find x if f(x) = 12

To find x when f(x) = 12, we start with the function definition:

f(x) = 2x + 8

Now we set f(x) equal to 12:

2x + 8 = 12

Next, we will solve for x:

1. Subtract 8 from both sides:

2x + 8 – 8 = 12 – 8

2x = 4

2. Now, divide both sides by 2:

x = 4 / 2

x = 2

So, the value of x when f(x) = 12 is 2.