What is the completely factored form of this polynomial? 81x4 − 16y4 A. (3x2 + 2y2)(9x + 4y)(9x − 4y) B. (9x2 + 4y2)(9x2 − 4y2) C. (9x2 + 4y2)(3x − 2y)2 D. (9x2 + 4y2)(3x + 2y)(3x − 2y)

15 points ! ~ see if you know the answer to both you!

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.