Essie 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. the company that he buys his hot dogs from was having a sale so he was able to buy the hot dogs for less. he will now sell them for $0.25 less than before. what should be changed in the equation c = .5x + 1.5 to represent this?