Joseph owns a hot dog stand and sells specialized hot dogs. He charges $1.50 for a plain hot dog and then an additional $0.50 for each topping that you want. This can be modeled by the equation C = .5x + 1.5, where C is the total cost of the hot dog and x is the number of toppings you ordered. Hattie sells hamburgers at the stand next door and has the same basic cost except she charges $2.50 for a plain hamburger and then $0.25 for each additional topping. How should she change Joseph's cost equation to represent her hamburger cost? A) Replace the .5 with a .25. B) Replace the 1.5 with a 2.5 C) Switch the x and C. D) Replace the .5 with a .25 and the 1.5 with a 2.5