Find the distance between (1,2) and ( 7,2

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?

If value of cos330° is √3/2 then find tan165°.

Which of the functions below could have created this graph?