A store that sells skis buys them from a manufacturer at a wholesale price of $57. The store’s markup rate is 50%. What price does the store charge its customers for the skis? SHOW YOUR WORK TO SOLVE THIS PROBLEM.

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)