Answer:
36/x=6
Step-by-step explanation:
should be b = 8/a-3
D(15) = 3500 -20(15)
D(15) = 3500 - 300
D(15) = 3200
In 15 hours of driving the Brown family is 3200(no unit given) away from home.
24-10=b
The cost of b is 14
Hope this helps