Could I get some help with the problem, please?

Question

Given f(x) = −2x + 5, find f(a + 1).

Would the answer to this problem be -2a+3?

Answer 1

Given f(x) = −2x + 5, the problem is simply asking us to substitute (a+1) for x.

This gives us:

f(a+1) = −2(a+1) + 5

f(a+1) = −2a - 2 + 5

f(a+1) = −2a + 3

So yes, you were correct!