Question

dada a função f(x) = -4x-28, calcule:

A f(7)
B f(0)
C f(-10)
D f (4/5)

Answer 1

f(x)= -4x-28

a)
f(7)= -4.7-28
f(7)=-28-28
f(7)=-56

b)
f(0)= -4.0-28
f(0)=0-28
f(0)=-28

c)
f(-10)=-4.-10-28
f(-10)=40-28
f(-10)=12

d)
f(4/5)=-4.4/5-28 =108