Find the probability.A lottery game contains 22 balls numbered 1 through 22. What is the probability of choosing a ball numbered 23?
A. 22
B. 0
C. 1
D. 
Answer: B
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Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ 2)(
- 2)
A. 6
B. 12
C. 4
D. 8 - 2
Solve the problem.A force of 2 pounds acts in the direction of 9° to the horizontal. The force moves an object along a straight line from the point (9, 6) to the point (14, 17), with distance measured in feet. Find the work done by the force. Round the answer to one decimal place, if necessary.
A. 24.2 ft-lb B. 31.6 ft-lb C. 23.9 ft-lb D. 11.9 ft-lb
Mentally estimate the sum by rounding each number to the first digit. 
A. 11,850 B. 12,100 C. 12,110 D. 12,102
Solve the problem.Suppose that during a certain step in a chemical manufacturing process the amount of hydrogen chloride dissolved in a solution, measured in parts per million (ppm), is related to the elapsed time measured from the beginning of the step. Use the following table as a representation of this relationship. Make a scatter diagram of the data. What is happening to the amount of hydrogen chloride in solution during this time frame?
A. The amount of hydrogen chloride dissolved
increased as time elapsed.
B. The amount of hydrogen chloride dissolved
increased as time elapsed.
C. The amount of hydrogen chloride dissolved
decreased as time elapsed.
D. The amount of hydrogen chloride dissolved
increased as time elapsed.