A fire is sighted due west of lookout A. The bearing of the fire from lookout B, 7.0 miles due south of A, is N 30°6' W. How far is the fire from B (to the nearest tenth of a mile)?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?