Regina spent $45.50 over 612 months on music downloads. If she spent the same amount of money each month, how much money did Regina spend per month on music downloads?

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.