Answer:
z=-3 so 2y+3(-3)=-8, 2y-9=-8, add 9 to both sides 2y=1 divide both sides by 2, y=1/2, so 3x+4(1/2)+-3=-2, 3x+2-3=-2, 3x-1=-2, add 1 to both sides, 3x=-1, divide both sides by 3, x=-1/3
4x + 3 = 11
4x = 11 -3
4x = 8
x =8/4
x =2
answer
the number is 2
The mean, since it's the average of whatever your data is.
6.5-3.5-2.25
=6.5-5.75
=0.75 yards of fabric left over
All you do is subtract the amount of fabric Sharyn is going to use from the total amount of fabric to find out how much fabric she will have left over.