Given the function f(x) = 2x + 8, how do I find x if f(x) = 12?

To find x when f(x) = 12 in the function f(x) = 2x + 8, we start by substituting 12 into the function. That means we set:

2x + 8 = 12

Next, we solve for x as follows:

1. Subtract 8 from both sides:

2x + 8 - 8 = 12 - 8

2x = 4

1. Now, divide both sides by 2:

x = 4 / 2

x = 2

So, the solution is that x = 2.

To double-check, we can substitute x back into the original function:

f(2) = 2(2) + 8 = 4 + 8 = 12

Thus, it confirms that our answer is correct!