Yuhh get in too ittt

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

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.