The independent quantity is 20-25 hours per week because time will go on no matter what. The dependent quantity is the amount of money Windiest is paid per hour.
Answer:
Factoring
Step-by-step explanation:
x^2 + 7x = x(x + 7) = 0
So
x = 0 or x = -7
18.5 - 6 = 12.5 gallons empty
12.5 / 18.5 = 0.676
0.676 x 100 = 67.6%
Answer: 67.6%
