Plz help. Answers below

A. $4000
B. $1200
C. $120
D. $3000

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

How do i do this activity, is appreciated

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