Nine less than two times a number is no less than the sum of five times the number and two

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?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.