What is the algebraic expression if it’s 10x+2

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

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?