Bx7=21 plz plz plz help help

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?

Which equation can be solved to find x the measure of jk in the apex

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i