Which set of ordered pairs does not represent a function? {(7, -5), (-5, -2), (8, –9), (-9,0)}

{(-3,0), (0, -5), (6,-2), (1, -2)}

{(6, -6), (-9,2), (6, -1), (-8, -9)}

{(7,3), (2, –6), (5, –7), (0, – 7)}

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Use the graph of the sine function y=2sinθ shown below

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning