Question

If f(x) = 2x + 1 and g(x) = −2x − 3, find (f + g)(−1).
2

4

−2

−8

Answer 1

Well begin by substituting -1 into both functions. Solve for each individually and add them together

Answer 2

What?

Answer 3

You have the function f(x) and the function g(x).
Substitute -1 in for x into the two different equations then add the answers of both together because you want (f + g)