Plz me with this asap 22 points plz pls with anyone of these or all these plz me for 10-13 you have to use words plz me fast

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

Which of the following expressions is equal to 2x^2+8

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?