Answer:
, 
Step-by-step explanation:
Given
A motorboat takes 5 hours to travel 200 miles upstream and 4 hours to go downstream
Suppose the speed of motorboat in still water and rate of current be x and y respectively.
during upstream

During downstream

Add (i) and (ii) we get


Thus, the speed of boat in still water is
and rate of current is 
The volume of a cylinder is I don’t know just tryna get my points
Answer:
A
23/7 times 23/7
Step-by-step explanation:
It’s the first one because the parabola is open