Answer:
850.
Step-by-step explanation:
1. 85 divided by 2, which is 42.5. 42.5 is the price of one box. 2. Multiply 42.5 by 20.
850
85/2 = 42.5
42.5 x 20 = 850
The midpoint of the positions of Luis and Don would be 5 km North of the water tower.
m =
b = 5
12+4x
p(t) = 0.8 when t = 7.38 hours