Erica went bowling with her friends. She paid $3 to rent shoes and then $5 for each game of bowling. If she spent a total of $23, then how many games did Erica bowl?

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%)