Don't overthink it.
You have been given the method of translation:
⇒
All you have to do is plug in the x and y values of B, giving you
for the coordinates of B'.
The point (x=5/2, y=-7/2) reflected over the y-axis it means that you just drag the point on the other side of y-axis so y is the same and x is negative.
( x= -5/2, y=-7/2) your reflected point is ( -5/2 , -7/2)
C. thats the only one that will give you the same price for the DVDS as well. they charge $14 for CDS and $19 for DVDS
Because the boat travels the distance twice as fast when going 3 three miles/hour faster the original speed must be 3 miles/hour. so the distance upstream would be 21 miles/hour.
