Joseph deguizman, an artist, sells both large paintings and small paintings. he sells his small paintings for $60 and his large paintings for $180. at the end of the week he determined that the total amount he made selling 12 paintings was $1200. determine the number of small and the number of large paintings that he sold.

Step-by-step explanation:

If all 12 had been small paintings, DeGuizman's revenue would have been $720. At $1200, it is $480 more than that. Each large painting generates $120 more revenue than a small painting, so there must have been $480/$120 = 4 of them sold.

8 small paintings and 4 large paintings were sold.

Part A.

Since the value of – 8 ft refers to the depth of the water, then 0 must refer to the surface of the water in the pool. Or to look it the other way, 0 is the boundary of the water in the pool and the air in the surrounding.

Part B.

Since the height of the slide is + 7 feet, then this means that the top of the slide is 7 feet from the surface of the water in the pool.

Part C.

Since 2 feet of the pole was submerged in the water (2 feet is under the surface of the water), then Casey should mark the level of the bottom of the pole as -2.