Some number is tripled and then cut in half. the result is increased by 5, and is equal to 20

Estimate the distance between orlando and jacksonville

Factor the polynomial by its greatest common monomial factor.

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%)