Apound of grass seed covers 120 square feet of lawn.
how many pounds are needed to seed a lawn measuring 50 by 40 feet (2000 sq ft)?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

How do you determine if an ordered pair is a solution to a given equation?