Aparty rental company has chairs and tables for rent. the total cost to rent 8 chairs and 3 tables is $38 . the total cost to rent 2 chairs and 5 tables is $35 . what is the cost to rent each chair and each table?

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?