Find the distance between the points (-3,- 2.2) and (-3,2.6). Plz explain I want to see if I got it right.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

If 3x+8=3x+8 is it one solution or no solution

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?