#### Answer

f(1)=1
f(2)=6
f(3)=11
f(4)=16

#### Work Step by Step

f(x)=5x-4
f(1)=5(1)-4 =1
f(2)=5(2)-4 =6
f(3)=5(3)-4 =11
f(4)=5(4)-4 =16
*You just plug the new number in for each of the x's in the original function and then solve to get your answer.