Look at the number sentence below. -26 + 75 =

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

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?

The table showed price paid per concert ticket on a popular online auction site. what was the average price paid per ticket