Which two elements are in the same Period? Lithium and Magnesium Potassium and Sodium Boron and Carbon Zinc and Nitrogen

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?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school