Find all solutions to the equation.
cos x = sin x (6 points)

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%)

Polygon abcd is a rectangle what is the area

Factor the following expression completely 6x^11-24x^7