In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer lectures in a school of 900 students?
A. About 18 students
B. About 324 students
C. About 180 students
D. About 162 students
Answer: D
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Solve the problem.If two cards are drawn without replacement from a deck, find the probability that the second card is a spade, given that the first card was a spade.
A. 
B. 
C. 
D. 
Solve the problem.How long will it take for an investment to double in value if it earns 4.25% compounded continuously? Round your answer to three decimal places.
A. 25.85 yr B. 8.155 yr C. 16.309 yr D. 17.715 yr
Solve the problem.Working together, Rick and Juanita can complete a job in 6 hours. It would take Rick 9 hours longer than Juanita to do the job alone. How long would it take Juanita alone?
A. 15 hr B. 6 hr C. 3 hr D. 9 hr
Decide if the statement: “If ABCD is a parallelogram, then ?A ? ?C,” is true or false. Then form its converse and decide if this converse is true or false. If both the statement and its onverse are true, write a biconditional that is equivalent to both statements.
What will be an ideal response?