What is the inverse of the function f(x) = 2x – 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?

15/16 as a decimal rounded to the nearest hundredth

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.