Which table represents a linear function

Solve 2x+y=3 x+y=5 in substitution method

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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