4. 7 + 14x
What does that mean

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?

Which of the following is equal to the rational expression when x is not equal to -2 or -6?

With this question, the answer with the red arrow is incorrect!