Mrs. Bell graded 6 students' tests in 0.5 hours. At this rate, how long will it take for her to grade 30 students' papers? State your answer in hours and minutes

Determine the relationship of ab and cd given the following points

Find the cosine function that is represented in the graph.

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?