Translate the word phrase into a math expression. three times the sum of a number and four. a. 3n + 4 b. 3(n + 4) c. 3 + 4n d. 3 + (n + 4)

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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.

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?