Solve the system of equations below y=3/2x-2 and 2x+y=-4

Rewrite the 2nd equation as 

y = -4 -2x

then substitute into the 1st equation so you get



then solve for x. 

when you get the value of x, substitute it into either equation to find y

hope it helps

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8