Answer:
5.5
Step-by-step explanation:
3.24 + 5.70 + 6.17 = 15.11
20.00 - 15.11 = 5.11
He got 5.11$ of change back.
just use a calculator and get 0.00166112956
Answer: 5 times
y = 2(x-a)/x
xy = 2x-2a
xy-2x = -2a
x(y-2) = -2a
x = (-2a)/(y-2)
