Solve by any desired method. If there is no real number solution, say so.4x2 + 12x = -6
A. x = 
B. x = 
C. x = 
D. x = 
Answer: B
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Find the vertex.f(x) = -2x2 - 20x - 48
A. (5, -2) B. (2, -5) C. (-5, 2) D. (-2, 5)
A pair of honest dice is rolled, and the number on each die is noted.How many different outcomes are there in the sample space?
A. 64 B. 30 C. 6 D. 12 E. none of these
Fill in the blank with one of the words or phrases listed below.
A(n) 
of an equation is a value for the variable that makes the equation a true statement.
A. base B. denominator C. solution D. term
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. 5 P1 planes and 17 P2 planes
B.
| 9 P1 planes and 13 P2 planes |
C. 7 P1 planes and 11 P2 planes
D. 11 P1 planes and 7 P2 planes