A store sells a package of 25 trading cards for $A store sells a package of 25 trading cards for $5.25. Explain how you can tell that the unit price per card is less than $1.

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%)