Countryside Bank uses activity-based costing to determine the cost of servicing customers. There are three activity pools: teller transaction processing ($2.60 per teller transaction), check processing ($0.20 per canceled check), and ATM transaction processing ($0.15 per ATM transaction). Rosa Bush had 5 teller transactions, 10 canceled checks, and 7 ATM transactions during the month. What is the total monthly activity-based cost for Rosa Bush during the month

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?