Melani earned $18.00 per hour for the first 40 hours she worked last week. She worked an additional 5.5 hours at a rate of $27.00 an hour. How much money did she earnin total? Don't forget to use a dollar sign and proper decimal.

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?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.

Which expression and diagram represent “renee biked four times as far this month as last month”?