Someone help me please

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

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?