Question

Considere a função F(x)=5x+5+15 e determine:

A)-F(9)
B)-F(-3)
C)-F(2/5)
D)-F(0)
E)-F(1/2)
F)-F(-1/3)
G)-(-4)

Answer 1

Resposta:

Explicação passo-a-passo:

Simplificando:

F(x)=5x+5+15 --> 5x+20

Resolução

A) F(9) = 5.9+20 = 45+20 = 65

B) F(-3) = 5.(-3)+20 = -15+20 = 5

C) F(2/5) = 5.2/5+20 = 2+20 = 22

D) F(0) = 5.0+20 = 20

E) F(1/2) = 5.1/2+20 = 5/2+20 = (5+40)/2 = 45/2 = 22,5

F) F(-1/3) = 5.(-1/3)+20 = -5/3+20 = (-5+60)/3 = 55/3 = 18,333...

G) F(-4) = 5.(-4)+20 = -20+20 = 0