I need help with number 1 and 2

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.

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?

If wxyz is a square, which statements must be true? plz < 3