What would be 80.9 km to cm

Do u just plot the numbers on the graph like (1,

Write the sentence as an equation. b increased by 281 is d

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?