David burns 220 calories riding her bike each hour. He wants to burn 550 calories riding his bike at the same rate. what answer represents all possible values for h, the number of hours David must ride her bike to burn more than 550 calories?

Imade a fort for my pet gorilla by connecting two boxes. the first box is 555 meters long, 999 meters wide, and 999 meters high. the second box is 333 meters long, 888 meters wide, and 222 meters high.how many cubic meters of space does my gorilla have to play in her fort?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10