Answer:
Step-by-step explanation:
Next time just substitute each of the options for x and y one at a time.
A
12x + 6y = 102
5x - 6y = 34
17x = 136
x = 8
y = 1
width = 20
length = 28
perimeter=96
width=x
length=x+8
(length*2) + (width*2) = perimeter
2(x+8) + 2(x) = 96
2x+16+2x=96
4x+16=96
4x=80
x=20
x = 300 minutes
20 + .15x = 35 + .10x
.05x = 15
See picture for the set up. You finish. Do the math.
