Kelly's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 20 coffees in all, 30% of which were regular. How many regular coffees did the cafe serve?

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?