If f(x) and f^{-1}(x) are inverse functions of each other and f(x) = 2x + 5, what is f(18)?

To find f(18) when f(x) = 2x + 5, we need to substitute 18 into the function.

So, we calculate:

f(18) = 2(18) + 5

Now let’s multiply 2 by 18:

f(18) = 36 + 5

Next, we add 5:

f(18) = 41

Therefore, the value of f(18) is 41.