Randy has $200 in his piggy bank. He spends 2 dollars every time he goes to the store. He makes 4 trips to the store every month. How much money, in dollars, will be in his piggy bank after a year?
Randy spends 2*4=<T>multiply(2, 4)=8 dollars every month.
Randy spends 8*12=<T>multiply(8, 12)=96 dollars in a year.
Randy will have 200-96=<T>subtract(200, 96)=104 dollars in his piggy bank after a year.
