Perform the operation or operations when possible.
+ 
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.A furniture manufacturer uses two types of fabric for a certain type of sofa. It is estimated that between 30 and 40 rolls of fabric A will be needed, but no more than 20 rolls of fabric B. Graph the possible number of rolls of fabric that are needed. 
A. 
B. 
C. 
D. 
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Functionz = 7x + 3yConstraintsx ? 0 0 ? y ? 2 x - y ? 3 x + 2y ? 6
A. Maximum: 20; at (2, 2) B. Maximum: 31; at (4, 1) C. Maximum: 6; at (0, 2) D. Maximum: 21; at (3, 0)
Use set statements to write a description of the shaded area. Use union, intersection and complement as necessary.
A. (A ? B)' B. A' ? B C. B - A D. A' ? B
Provide an appropriate response.Arrange the polynomial in descending order: x6 + 5x4 - 3x2
A. x6 + 5x4 - 3x2 B. x6 - 3x2 + 5x4 C. 5x4 + x6 - 3x2 D. 5x4 - 3x2 + x6