Question

Dada a função f (x) = 8x + 15, calcule:
a) f(0) – f(3)
b) f(5) – f (10)
c) f(7) + f(-3)
d) f(2) + f( 3)

Answer 1

Explicação passo-a-passo:

f(x)=8x+15

f(0)=8.0+15

f(0)=15

f(3)=8.3+15

f(3)=24+15

f(3)=39

f(0)-f(3)=15-39

f(15)-f(39)=-24

f(5)=8.5+15

f(5)=40+15

f(5)=55

f(10)=8.10+15

f(10)=80+15

f(10)=95

f(5)-f(10)=55-95

f(55)-f(95)=-40

f(7)=8.7+15

f(7)=56+15

f(7)=71

f(-3)=8.(-3)+15

f(-3)=-24+15

f(-3)=-9

f(7)-f(-3)=71+(-9)

f(71)+f(-9)=71-9

f(71)+f(-9)=62

f(2)=8.2+15

f(2)=16+15

f(2)=31

f(3)=8.3+15

f(3)=24+15

f(3)=39

f(2)+f(3)=31+39

f(31)+f(39)=70