Answer:
B - 10c
Step-by-step explanation:
Let B be the initial balance
And c be the cost of each trip
Her balance would be:
B - 10c
The formula of a distance between two points:

We have the points (0, 0) and (6, -8). Substitute:

Answer:
1. 26.3 hrs
2.$17.6
Step-by-step explanation:
1. Subtract 50 from 300. Then divide 250 by $9.50.
2. Subtract 28.50 from 80. Then divide 51.50 by 3.