15. Mrs. Ruiz sorted spools of thread into 6
boxes. Each box holds 6 spools. How
many spools of thread does Mrs. Ruiz
have?
Use the model to solve. Explain how you
solved the problem.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.