Albert bought 18 yards of clot. he used 5.7 yards for a decoration and 8.8 yard to make costumes for the school play. express the amount of cloth left over as a fraction in its simplest form .

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?