Answer: 17
Explanation: In this problem we're given the function f(x)= – 2x + 7 and we are asked to find f(-5).
In other words, if we put an x into our function, we get a -2x + 7 out so we want to figure out what will happen when we put a -5 into the function.
Well if we put a -5 into the function, that's f(-5) and we get a -2 × -5 + 7 out. Or, f(-5) = 10 + 7. Now all we have to do is simplify on the right side to get f(-5) = 17.
