Find the domain of the function.f(x) = 
A. (-?, ?)
B. (-?, 9)
C. (-?, 0) ? (0, ?)
D. (-?, -9) ? (-9, ?)
Answer: D
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Convert the Roman numeral to Hindu-Arabic form.
A. 13,000 B. 93,000,000 C. 13,000,000 D. 93,000
Solve the problem.Find the expected number of girls in a family of 3 children.
A. 2 B. 2.5 C. 1.5 D. 2.25
Solve the problem.A man has $298,000 invested in three rental properties. One property earns 8.5% per year on the investment, a second earns 11%, and the third earns 7%. The annual earnings from the the properties total $17,000. Write a system of two equations to represent the problem with x, y, and z representing the 8.5%, 11%, and 7% investments, respectively.
A. 
B. 
C. 
D. 
Use the simplex method to solve the linear programming problem.Minimizew = y1 + 3y2 + 2y3subject to:y1 + y2 + y3 ? 50 2y1 + y2 ? 25 y1 ? 0, y2 ? 0, y3 ? 0
A. 50 when y1 = 50, y2 = 0, and y3 = 0 B. 87.5 when y1 = 0, y2 = 0, and y3 = 1 C. 75 when y1 = 0, y2 = 75, and y3 = 50 D. 12.5 when y1 = 1, y2 = 2, and y3 = 1