<span>6x-7y=-84
7y = 6x + 84
y = 6/7(x) + 12</span>
120/4 is 30
You'll be able to put 4 nails thirty times.
You put them every 6 feet
So, you have 5 feet before running out.
4x/15 = 60/x
4x^2 = 900
x^2 = 225
x = 15
Answer:
.
Step-by-step explanation:
