Last week, chen bought 812 gallons of gas at $2.30 per gallon. this week, he bought 4310 gallons of gas at $2.70 per gallon. what was his total cost?

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.