Use a graphing utility to find the inverse, if it exists, of the matrix. Round answers to two decimal places.
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A country has five states with populations as given in the table below and needs to apportion 250 seats in the legislature. Use the Webster Method to apportion the seats. 
A. 
B. 
C. 
D. 
Find the distance between the points. Round your answer to the nearest tenth except when an exact answer is requested.(-2, -5) and (2, 7) (exact answer)
A. 128
B. 8
C. 128
D. 4
Graph the solution set of the system of inequalities.
A. 
B. 
C. 
D. 
Solve the linear programming problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 750 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 9 P1 planes and 13 P2 planes B. 5 P1 planes and 17 P2 planes C. 7 P1 planes and 11 P2 planes D. 11 P1 planes and 7 P2 planes