Will give est! a pool company is creating an image for a client that has the look of a 3-d image for a family pool and a similar dog pool. find the value of c in the drawing below:

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%)