The kilopascal is a unit for atmospheric pressure. Suppose the atmospheric air pressure at sea level is about 102 kilopascals. for every 1000-m increase in altitude, the pressure decreases about 11.4%. What is the approximate pressure at an altitude of 3000 m?

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?