What is the perfect square from 401 to 1000

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

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?