The center of a circle is located at (0,4). The endpoint, X, of one of the circle's radii is (-4,-5). Segment XY is a diameter of a circle. Where is point Y located? A. (13,4)
B. (5,4)
C. (4,5)
D. (4,13)

Which function is represented by the graph

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2