If yo answered no give an example of 2 outputs that are possible for the same output

The graph below could be the graph of which exponential function?

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=