Ten less than 2 times the value of a number is equal to 5 times the quantity of 4 more than one-fifth of the number. If a is the number, what is the value of a? In the textbox write and solve an equation to find a. Show your work.

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?