Please help and show work thank you!

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

Asporting good store is offering 30 percent off of the original price(x) of football cleats. the discount will be reduced by an another $7 before sales tax.