Find the mean absolute deviation of the following numbers:
12, 15, 17, 18, 15, 20, 22

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9