Bridgette wants to make 14 matching hair bows for her friends. Each hair bow requires ¾ of a yard of ribbon. How many yards of ribbon will Bridgette need to make all the hair ?

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%)