Answer:
B and C
Explanation:
x+y=5
-y. -y
x=5-y
5-y-y=1
5-2y=1
-5. -5
-2y= -4
/-2. /-2
y=2
x+2=5
-2. -2
x=3
x is 3 miles per hour in still water so C is correct
y is the current or the speed of the water which is 2 miles per hour so b is correct
hopes this helps