7(Multiple Choice Worth 2 points) (Graphing Linear Equations MC) A gymnast joined a yoga studio to improve his flexibility and balance. He pays a monthly fee and a fee per class he attends. The equation y = 20 10x represents the amount the gymnast pays for his membership to the yoga studio per month for a certain number of classes. Which graph represents this situation? graph with the x axis labeled number of classes and the y axis labeled monthly amount in dollars and a line going from the point 0 comma 30 through the point 1 comma 40 graph with the x axis labeled number of classes and the y axis labeled monthly amount in dollars and a line going from the point 0 comma 20 through the point 1 comma 30 graph with the x axis labeled number of classes and the y axis labeled monthly amount in dollars and a line going from the point 0 comma 10 through the point 1 comma 30 graph with the x axis labeled number of classes and the y axis labeled monthly amount in dollars and a line going from the point 0 comma 0 through the point 1