Plz help me thanks, as fast as you can

The graph shows the rate at which paint is used to paint a wall.enter values to complete each statement below based on the graph.when 1 gallon of paint has been used, ( # ) square feet of the wall will be painted.the unit rate is ( # )square feet per gallon.

What is the inverse of the function f(x) = 2x + 1?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?