Every hour he bikes 13 miles:)))
The answer could be 70a+21b
Answer:
x = 25
Step-by-step explanation:
49 - 25 = 25
150 - 8d = 175 - 10d
-8d + 10d = 175 - 150
2d = 25
d = 25/2
d = 12.5...so each dvd costs 12.50
150 - 8(12.5) = 150 - 100 = 50
175 - 10(12.5) = 175 - 125 = 50
so they will each have 50 bucks left on their card
