() use the values to solve this problem. a = 4, b = 2, c = 5 6a b

Which of the following expressions is equal to 2x^2+8

Which of the following represents the factorization of the trinomial below? x^2+7x-30

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%)