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, 900 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. 13 P1 planes and 9 P2 planes
B. 9 P1 planes and 13 P2 planes
C. 14 P1 planes and 7 P2 planes
D. 5 P1 planes and 22 P2 planes
Answer: C
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Determine if the series converges or diverges. If the series converges, find its sum.
A. diverges
B. converges; 
C. converges; ln 4
D. converges; 
A company, with 1080 total employees, prepares the following analysis for the length of time its employees have been with the company. Use the table to answer the question. 
What is the ratio of employees working 2 years or less to the total number of employees?
A. 
B. 
C. 
D. 
Solve the problem.A man rode a bicycle for 12 miles and hiked an additional 8 miles. The total time for the trip was 5 hours. If his bicycling rate was 10 miles per hour faster than his hiking rate, then what was his hiking rate?
A. 1 mph B. 3 mph C. 4 mph D. 2 mph
Simplify.350 - 33? 24 ÷ (4?3 - 2?2)
A. 642 B. 269 C. 292 D. 969