Solve the problem.The time it takes to complete a certain job varies inversely as the number of people working on that job. If it takes 20 hours for 9 carpenters to frame a house, then how long will it take 35 carpenters to do the same job?
A. 35 hr
B. 5.1 hr
C. 40 hr
D. 15.8 hr
Answer: B
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Solve the quadratic equation by factoring.4x2 - 5x - 9 = 0
A. 
B. 
C. 
D. 
Simplify. 
A. 
B. 
C. 
D. 16
Solve.An isosceles right triangle has legs of equal length. If the hypotenuse is 18 inches long, find the length of each leg.
A. 81
in.
B. 9
in.
C. 18
in.
D. 
in.
A certain airport hotel operates a shuttle bus service between the hotel and the airport. The maximum capacity of a bus is 20 passengers. On alternate trips of the shuttle bus over a period of 1 wk, the hotel manager kept a record of the number of passengers arriving at the hotel in each bus.
Describe the event E that a shuttle bus carried fewer than twelve passengers. a. {0, 1, 2, 3, 4, 5, 6, 7, 8} b. {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} c. {0, 1, 2, 3, 4, 5, 6, 7} d. {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}