Ineed with these two i need to know the answers

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

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .

What is the measure of one interior angle of a pentagon