Answer:
Rate in still water = 27.5 mph
Current's rate = 12.5 mph
Step-by-step explanation:
Let
x mph = row team rate in still water
y mph = current's rate
<u>Upstream:</u>
Distance = 30 miles
Time = 2 hours
Rate = x - y mph
Then

<u>Downstream:</u>
Distance = 30 miles
Time = 45 minutes
hour
Rate = x + y mph
Then

From the first equation:

From the second equation:

Add these two equations:

Subtract these two equations:

Move 8x to the right
0=x^2-8x+15
Then factor
(x-5)(x-3)
Final answer: C
I believe it’s (8,6) because dilation mean to make it bigger by 2
Answer:
x=-5
Step-by-step explanation:
3x+6=-9
-6 -6
3x=-15
x=-5