Show work! colton sold a total of 28 t-shirts and sweatshirts as a part of a fundrasier for his football team. if t-shirts cost $12 each and sweatshirts cost $20 each and he raised a total of $424, how many t-shirts did he sell? (i'm just really stuck on this problem : / )

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.

How do you solving the solution of each system using elimination?

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?