Pam starts a collection of pennies on Sunday. She starts with one penny in the collection, and each day (including Sunday) her father agrees to double the number of pennies in her collection.

Case I How many pennies does Pam have in her collection at the end of the day on the following Saturday? Case II Suppose that each morning Pam adds one more penny herself to the collection, before her father comes to double the number of pennies in the collection. In this case, how many pennies does Pam have in her collection at the end of the day on Saturday? How many more pennies does Pam have in the collection at the end of the week in Case II than in Case I?

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