Definition of a function

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

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?