Question

seja f (x) =5x-2 determine

a)f(3)



b)f(-3)




2)seja f(x)=6x-8
determine x de modo que f (×)=22​

Answer 1

Resposta:

a)5.3-2=15-2=13 f(3)=13

b)5.(-3)-2=-15-2 f(-3)=-17

2)5×-2=6×-8

5×-6×=-8+2

-×=-6 ×=6

5×-2=22

5×=22+2

5×=24

×=24/5 x=4,8