Last week, byron bought 5 containers of yogurt and spent $12.88 on other
groceries. this week cassandra bought 3 containers of the same yogurt
and spent $11.50 on other groceries. how much more money did byron
spend than cassandra?

asap need it due by tomorrow

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%)