Solve.
= 3
A. {-1, -7}
B. {1, 7}
C. ?
D. {-1}
Answer: A
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Convert the measurement as indicated.16,533 ft = 
mi 
ft
A. 4 mi 693 ft B. 3 mi 593 ft C. 3 mi 693 ft D. 2 mi 793 ft
Solve the problem.The roof of a building is in the shape of the hyperbola 
where x and y are in meters. Determine the distance, w, the outside walls are apart, if the height of each wall is 11 m. Round to the nearest tenth when necessary.
A. 10.25 m B. 20.5 m C. 105 m D. 11.7 m
Translate the statement of variation into an equation and use k as the constant of variation.y varies directly as the cube of b.
A. b = ky3
B. y = b3
C. 
D. y = kb3
E. y = kb
Solve the problem.Between 7:00 AM and 8:00 AM, trains arrive at a subway station at a rate of 15 trains per hour 
per minute). The following formula from statistics can be used to determine the probability that a train will arrive within t minutes of 7:00 AM. F(t) = 1 - e-0.25tDetermine how many minutes are needed for the probability to reach 90%.
A. 9.21 min B. 4.53 min C. 0.38 min D. 2.97 min