"If you subtract 19 from my number and multiply the difference by -2, the result is -8 ." What is 's number?

100 points, hi, i’m not sure how to get the equation from the graph and table.

Through non-collinear points there is exactly one plane.

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