Answer:

combine terms
subtract x from both sides and add 1 to both sides

Answer is A
-1/2 because slope is the rise over the run. If you count on the grid from one point on the line to another you go up one and 2 to the left meaning the slope is 1/2, buttttt when the line decreases going to the right, it has a negative slope so you just add a - sign in front
63+12x<15
12x<-48 (subtract 63 from both sides)
x<-4 (divide out the 12)
Each heir would receive $20727.27
Let 'w' represent the width of the parking lot, then 'w+6' represents its length
area = width * length
160 = w * (w+6)
solving for 'w' we have a positive value of w=10
10+6=16
the width of the parking lot is 10 yards, the length of the parking lot is 16 yards