Question

Using the function f(x) = 2x + 7 find the following: (show your work)
f(2) and f(7)

Answer 1

All you have to do is substitute 2 and 7 in for x in the function.

f(2) = 2(2) + 7 

= 11

f(7) = 2(7) + 7

= 21