Given D(-3,4) and E(-7,-6) round to the nearest tenth

What number must you add to complete the square x^2+12x=16

Find the slope of a line given the following two points

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?