Part a) write the equation of the circle by completing the square.

part b) what is the center and the radius of the circle?

x2 + 4x + y2 - 2y = 20

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

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

To decrease an amount by 16% what single multiplier would you use