Which is the better by 3 pounds for $8.31 or 5 pounds for $12.95 explain

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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

Is the figure congruent? yes or no?