Answer:
x=40/9
Step-by-step explanation:

Y=(1/2)x cause the constant variation is 1/2
Number 3 it is a factor because if u expand you will see that x+6 will be the answer
Distribute through the parenthesis
subtract 5 from both sides
divide both sides by -1/3...or multiply both sides by -3
Standard Form would be 0.00807