What does the constant term in the above expression represent? a. the constant -10 represents the maximum number of cheeseburgers sold by the food stall at the funfair. b. the constant -10 represents the cost of each cheeseburger at the food stall. c. the constant -10 represents the total money earned by setting up the food stall. d. the constant -10 represents the cost of setting up the food stall even if no cheeseburgers were sold.