Janet paid for her prescriptions costing $37.13. She paid with a $50 bill. How much change did Janet get back? (Show your work)

Karianne and lucius are analyzing a linear function on a graph. karianne says that unit rate is equal to rate of change, but that slope is calculated differently. lucius says that unit rate, rate of change, and slope are calculated the same way. who is correct? explain your answer.

Which graph represents an even function?

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