Which expression is equivalent to 4(3+ 5) - 3 • 9^2? A.17 - (27)^2
B.12 + 20 - 54
C. 4(8) - 3 • 81
D. 14 • 81

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.

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day

Two numbers have a sum of -19. one number is x. what expression represents the other number?