The angle of elevation from the bottom of a scenic gondola ride to the top of the mountain is 22. if the vertical distance from the bottom to the top of the mountain is 689 feet. what is the length of the gondola ride? round to the nearest foot.
a: 1839ft
b: 743
c: 258
d: 634

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?