Geometry! help pls asap

Which of the following best describes the graph below? a. it is a function, but it is not one-to-one. b. it is a one-to-one function. c. it is not a function. d. it is a many-to-one function.

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?