Answer: f(3) = 4
Explanation:
When evaluating a function of x at a single value, plug the number into the equation everywhere you see an x. In this case, f(x) = 3x - 5, so f(3) = 3(3) - 5. Using order of operations, we evaluate the multiplication first and then subtract. 3 times 3 equals 9, and then subtract 5 to get 4.