Solve for x using common denominators.

2 over the quantity 3 times the binomial x minus 1 equals x over the quantity x minus 1

2 over 3
−2 over 3
3 over 2
−3 over 2

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?