Divide using long division.
A. 2x + 
B. 2x + 7
C. 2x + 
D. 2x + 
Answer: A
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Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be aligned again?
A. 210 seconds B. 630 seconds C. 420 seconds D. 840 seconds
Evaluate using any method.
Use the appropriate geometric formula from the following list to find the requested measure. 
The area of two squares, each with a side measuring 12 yards
A. 48 sq yd B. 144 sq yd C. 139 sq yd D. 288 sq yd
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Two marbles are drawn from a bag in which there are 4 red marble and 2 blue marble. The number of blue marbles is counted.
A. 
B. 
C. 
D. 