Question

Dada a função f(x)=5x-7, determine: f(3) e f(-1)

Answer 1

f(x)=5x-7
f(3)= 5(3)-7
f(3)= 15-7
f(3)=8


f(x)=5x-7
f(-1)= 5(-1)-7
f(-1)=-5-7
f(-1)=-12