Provide an appropriate response.If 
of all plumbers in the city belong to the plumber's union, what percent belong to the union?
A. 60%
B. 40%
C. 80%
D. 20%
Answer: C
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Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300 B. $0.60 C. $1 D. $100
Perform the indicated operation. Write the result in standard form.8i + (-5 - i)
A. 5 - 7i B. -5 + 7i C. -5 + 9i D. 5 - 9i
Solve the problem.In a survey of 142 vacationers in a popular beach resort town, 74 indicated they would consider buying a home there, 66 would consider buying a beach villa, 53 would consider buying a lot, 28 would consider both a home and a villa, 33 would consider both a home and a lot, 23 would consider both a villa and a lot, and 13 would consider all three. How many vacationers would not consider any of the three? How many would consider only a home?
A. 33; 41 B. 20; 10 C. 20; 26 D. 20; 28
A triangle with vertices at (x1, y1), (x2, y2), and (x3, y3) has area equal to the absolute value of D, where 
. Use this information to solve the problem.Use D to find the area of the triangle shown.
A. 35.0 B. 34.0 C. 35.5 D. 34.5