Which algebraic expressions are polynomials? Check all that apply. O -
2x² - 1
x
oxy - 3x² + 6x
y² + 5y - 3
02-√4x
-X/5
+ تل - شهر -

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

What percent of 18 is 24? and plz explain thx.

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%)