Lisa glued two pieces of wood together to make the letter l in her art class. she plans to paint all sides of it purple, including the base.

the longer piece of wood has dimensions of 2 inches by 2 inches by 9 inches. the shorter piece of wood has dimensions of 3 inches by 2 inches by 2 inches. how many square inches of purple paint will lisa use to paint her letter l?

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?