Person a buys 6 granola bars and 4 cups of yogurt for $10. 50. Person b buys 4 granola bars and 8 cups of yogurt for $11. Find the cost of each item.

What is 7/81 as a percentage? round your answer to the nearest tenth of a percent.

Zachary has been trying to work on an essay for almost three hours, be he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesnt suffer because of poor concentration and lack of energy

What is the meaning of the prefix un-? a. over b. above c. under d. not