Find the discount. round your answer to the nearest percent. item: rocking chair regular price: $130.00 sale price: $100.00 23% 20% 21% 22%

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%)