Question

sendo f(×)=12-3.x,calcule
a) f(-3);
b) f(1/2);
c)f(5).

Answer 1

A) f(x) =12-3.x
A)f(-3)=12-3.(-3)
f(-3)=12+9
f(-3)=21

B)f(x)=12-3.x
f(1/3)=12-3.1/3
f(1/3)=12-3
f(1/3)=9

C)f(x)=12-3.x
f(5)=12-3.5
f(5)=12-15
f(5)= - 3