#### Answer

f(1)=-2
f(2)=-7
f(3)=-12
f(4)=-17

#### Work Step by Step

f(x)=-5x+3
f(1)=-5(1)+3 =-2
f(2)=-5(2)+3 =-7
f(3)=-5(3)+3 =-12
f(4)=-5(4)+3 =-17
*You just plug the new number into each of the x's in the original function and then simplify to get your answer.