Solve the 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. 11 P1 planes and 7 P2 planes
B. 5 P1 planes and 17 P2 planes
C.
| 9 P1 planes and 13 P2 planes |
D. 7 P1 planes and 11 P2 planes
Answer: C
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Use the statistical display to answer the question.The midterm test scores for the seventh-period typing class are shown below on a dot plot. 
What is the largest gap in scores, not including gaps between outliers?
A. 98-100 B. 91-97 C. 69-91 D. 83-86
Use the intermediate value theorem to approximate the one real zero on the given interval. Round your answer to two decimal places.f(x) = x3 - 8x - 3; [-3, -2]
A. -0.38 B. -2.62 C. 0.38 D. 2.62
Find the first 4 terms of the recursively defined sequence.a1 = 4, an+1 = 
A. 
, 16, 
, 64
B. 4, 
, 
, 
C. 4, 
, 
, 
, 
D. 4, 
, 4, 
Solve the problem.A photographer points a camera at a window in a nearby building forming an angle of 42° with the camera platform. If the camera is 52 m from the building, how high above the platform is the window, to the nearest hundredth of a meter?
A. 57.75 m B. 0.9 m C. 1.11 m D. 46.82 m