Question

Dada a função f(x)=7x+21

encontre:

a) f(0)



b) f(4)

c) f(-8)

Answer 1

f(0)=7x0+21
f(0)=0+21
f(0)=21

f(4)=7x4+21
f(4)=28+21
f(4)=49


f(-8)=7(-8)+21
f(-8)=(-56)+21
f(-8)=(-35)