a school theater can sell 21 tickets for a show if 6 have been sold how many tickets are still left to be sold

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Answer pls man im trying to get out of summer school