Nathan Has 80 Stamps In His Collection He Adds 1 Stamp To It Today Each Day He P

Nathan has 80 stamps in his collection. He adds 1 stamp to it today. Each day he plans to add twice the number of stamps as the previous day. If he keeps adding stamps at this rate for n days, The recursive function is A.next=now+2^n B.next=now+2^(n-1)C.next=now-2^n-1. Starting at A.80 B.2^n C.80^n There is two questions, thanks anyone in advance.

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