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1.A classroom is rectangular in shape. If listed as ordered pairs, the corners of the classroom are (−12, 18), (−12, −11), (9, 18), and (9, −11). What is the perimeter of the classroom in feet?

2.A coach needs to fill a rectangular container with water to have available for karate practice. If the dimensions of the container are 30 inches by 22 inches by 20.8 inches, what is the maximum amount of water that the rectangular container will hold?

3.Rita read 1,250 words in 5 minutes. Joy read 1,464 words in 6 minutes. Who read at the faster rate?

4.A piano has a ratio of 2 black keys for every 5 white keys. Write a ratio to represent the ratio of white keys to black keys.