Find the probability.People were given three choices of soft drinks and asked to choose one favorite. The following table shows the results.
Find P(person is over 40|person drinks root beer).
A. 
B. 
C. 
D. 
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, 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. 5 P1 planes and 17 P2 planes
B.
| 9 P1 planes and 13 P2 planes |
C. 11 P1 planes and 7 P2 planes
D. 7 P1 planes and 11 P2 planes
Use the distributive property to multiply. Then, if possible, simplify the resulting expression.4(a + b)
A. 4ab B. 8ab C. 4a + 4b D. 4a + b
Express the solution set of the inequality in interval notation and graph the interval.x ? 4
A. (4, ?)
B. (-?, 4)
C. [4, ?)
D. (-?, 4]
Solve the equation.(x - 8)(x + 9) = 0
A. {8, -9} B. {8, -8, 9, -9} C. {-8, 9} D. {8, 9}