Question

!!!!!!!!!
Pra hj pfv!

Answer 1

Resposta:

Explicação passo a passo:

a.

f(5)=5+1/2.5

f(5)=6/10

f(-2)=-2+1/2.(-2)

f(-2)=-1/-4

f(-2)=1/4

f(1)=1+1/2.1

f(1)=2/2

f(1)=1

b.

f(-1)=-1+1/2.(-1)

f(-1)=0/-2

f(-1)=0

c.

x+1/2x=4/7

7(x+1)=4.2x

7x+7=8x

8x=7x+7

8x-7x=7

x=7