Rectangle n has an area of 5 square units. james drew a scaled version of rectangle n and labeled it rectangle p. what scale factor did james use to go from rectangle n to rectangle p?

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%)