Resposta :
Substitui o valor de X e calcula...
a) f(27) = -2/3.27+18
f(27) = -2.9+18
f(27) = -18+18
f(27) = 0
b) f(0) = -2/3.0+18
f(0) = 0+18
f(0) = 18
c) F(-3) = -2/3.(-3)+18
f(-3) = +2+18
f(-3) = 20
d) F(-6) = -2/3.(-6)+18
f(-6) = -2.(-2)+18
f(-6) = 4+18
f(-6) = 22
a) f(27) = -2/3.27+18
f(27) = -2.9+18
f(27) = -18+18
f(27) = 0
b) f(0) = -2/3.0+18
f(0) = 0+18
f(0) = 18
c) F(-3) = -2/3.(-3)+18
f(-3) = +2+18
f(-3) = 20
d) F(-6) = -2/3.(-6)+18
f(-6) = -2.(-2)+18
f(-6) = 4+18
f(-6) = 22