Pentagon PQRST and its reflection, pentagon P'Q'R'S'T', are shown in the coordinate plane below: What is the line of reflection between pentagons PQRST and P'Q'R'S'T'?
A)y = x 
B)y = 0 
C)x = 1 
D)x = 0

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?