Can someone solve this for me and show your work
4x²
if x = -2

What is coefficient of the term of degree of degree 5 in the polynomial below

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

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%)