On Monday, Sam has a collection of 88 MP3s on his MP3 player. He downloads another 22 MP3s throughout the week, How many MP3s does he have by the lend of the week?
A 4
B. 22
C. 66
D. 88
E. 110

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?