After the 3 years, they start a family and find they can contribute only $200 per quarter. If they leave the money from the first 3 years in the account and continue to contribute $200 at the end of each quarter for the next 18 1 2 years, how much will they have in the account (to help with their child's college expenses)? (Round your answer to the nearest cent.) $

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than 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?