Answer:
he earns 5 dollars for walking 4 dogs
Step-by-step explanation:
B: 6/4 or 1 2/4
C: 70 Mins
1, 20ft*15ft=300ft^2
2, 30ft*25ft=750ft^2
3, 750ft-350ft=450ft^2
4, 450 ft^2 = 30 mins
5, 350ft=750ft=1050ft^2
6, 1050/450=2.3333
7, 30*2.3333=70
8, 70 mins