Name the indicated property.3x = 21, then 
(3x) = 
(21)
A. symmetric property
B. transitive property
C. reflexive property
D. multiplication property
Answer: D
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Determine whether the following is a probability model.
A. Yes B. No
Solve the system of equations.
A. x = 3z + 5, and y = z - 2, where z is any real number or {(x, y, z) |x = 3z + 5, and y = z - 2, where z is any real number} B. x = -3z - 5, and y = z + 2, where z is any real number or {(x, y, z) |x = -3z - 5, and y = z + 2, where z is any real number} C. x = z - 2, and y = -3z - 5, where z is any real number or {(x, y, z) |x = z - 2, and y = -3z - 5, where z is any real number} D. inconsistent
Verify the identity.
- 
= - cos x cot x
What will be an ideal response?
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of the feasible points.z = 3x + 5y. Find maximum and minimum. 
A. maximum value: 56; minimum value: 9 B. maximum value: 36; minimum value: 15 C. maximum value: 36; minimum value: 9 D. maximum value: 56; minimum value: 15