Joy is planning to purchase a sweater that costs 30$ dollars at her local department store. the sweaters are on sale for for 20% off. which steps are needed to find the sale price of the sweater in words?

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%)