Bryce started with $450 in a bank account that does not earn interest. in the middle of every month, he withdraws 1/2 of the account balance. which recursive function rule models bryce’s balance at the end of each month?

This would be a geometric sequence, since he is taking 1/2 of the money out.  He is leaving 1/2 in as well, which is the same as multiplying his account balance by 1/2.  In this geometric sequence, r, the common ratio, is 1/2.  Recursive formulas for a geometric sequence are given by .  In this case it would look like .