Find the average rate of change for the function f(x) =x^2 -6x+2 on the closed side interval (-5,2)

What is the slope of the line shown below?

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.

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%)