Jesslyn hypothesizes that the value of antique furniture can be modeled by exponential decay and that the value of a particular piece will decrease at a rate of 0.15% each year. if the furniture was originally valued at $15,000 in 1990 what should jesslyn expect the value of the furniture to be in 2010?

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?