Find the mean. If necessary, round to one decimal place.74, 47, 74, 99, 47
A. 68.7
B. 85.3
C. 68.2
D. 67.7
Answer: C
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Use the two steps for solving a linear programming problem to 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, 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. 5 P1 planes and 22 P2 planes B. 13 P1 planes and 9 P2 planes C. 9 P1 planes and 13 P2 planes D. 14 P1 planes and 7 P2 planes
Refer to the figure to answer the question. Line DH is parallel to line IM. Line BO is perpendicular to line DH.
m?IJN is 52°. What is the measure of ?DEA?
A. 52° B. 38° C. Cannot be determined D. 128°
Determine if the function is increasing or decreasing over the interval indicated.f(x) = 
+ 7; (0, ?)
A. Increasing B. Decreasing
Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = x2 + 4x + 3
A. vertex (2, -1)
intercepts (1, 0), (3, 0), (0, 3)
B. vertex (-2, 1)
intercepts (-1, 0), (- 3, 0), (0, -3)
C. vertex (-2, -1)
intercepts (-1, 0), (- 3, 0), (0, 3)
D. vertex (2, 1)
intercepts (1, 0), (3, 0), (0, -3)