Air filters are rated based on particle size that the filter will collect. Hospitals use air filters to remove dust and other particles from air. The maximum particle sizes that a set of filters will collect (in units called microns) are 12/10, 0.01, 0.38, 5/10 and 0.07. Write the particle sizes in order from least to greatest.

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?