Polygon abcd is dilated by a scale factor of 1.5 with point a as the center of dilation, resulting in the image a'b'c'd'. if the length of is 4.5 units, which sentence about is true?

choices are in the attachment.

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?