Pedro goes to the store and buys a bag of dog food, cat food, and a bag of bird food to feed his animals. The cat food cost is 3 times the cost of the bird food, and dog
food costs three dollars
more than the cat food. The total cost of the three bags of
food, with no tax, is $45.00. Write an equation to represent the situation. Show your
work. What is the cost of each bag of food?