Dave wants to buy pet insurance for his cat, dog and pony. He has found four insurance companies, and the prices they charge for insuring individual animals are given in the table below The insurance companies all give discounts on the total bill if you buy insurance for more than one pet from them. A1 pets, Bestforpets and Callavetins all take $5 off the total bill if you buy insurance for two pets and $10 off if you buy insurance for three. Dailysafety takes $10 off for two pets and $15 off for three.