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, which recursive function represents the number of stamps he has on any day in the future?
The recursive function is , starting at

Question

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, which recursive function represents the number of stamps he has on any day in the future?
The recursive function is , starting at

anonymous · Answer

options 
$$next=now+2^n$$      
$$next=now+2^n-1$$  
$$next=now-2^n-1$$ 
starting at 
80
$$2^n$$
$$80^n$$