What is straight continues in both directions and does not end

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?

How do you find the circumfrance of a circle?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?