The first term occurs when . Next the second term occurs when , the third term when and so on. Therefore, the appropriate value of n that lies on the domain for n is
First you have to find out how much one cost. In order to do that you have to divide 3.60/6. You would get 6. That is how much one cost. Then you have to multiply 6*2 and you would 12. So the answer is $12. I hope this helps
