22.22 divide 2.2 pls do ittt

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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%)

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?