Ireally need i am feeling lazy right now

What is the radius of the cone in the diagram? round your answer to the nearest whole number

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.