4 + 8x – 3 + 2y + w with Variables Constants Coefficients and terms

Which expression is equivalent to -12(3x-3/4)

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?

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.