√7x^3 exponential form

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

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%)