Answer:
68.0
Step-by-step explanation:
3x+4y+7=0.... equations (1)
which is required equations
x=-1
y=-3
3x-2y=3(1)
5.(1) <=> 15x-10y=15 (2)
15x-4y=-3 (3)
(2)-(3) <=> -6y=18
The width is 8 feet
20 divided by 2.5 equals 8 feet
1= 23
2= 104
3= 90