The hardcover version of a book weighs twice as much as it's paperback version. the hardcover book and the paperback together weigh 5.3 pounds. create 2 equations to represent this scenario

Hundred and tens tables to make 430 in five different ways

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?

Calculate the annual effective interest rate of a 12 % nominal annual interest rate compound monthly