Find the asymptotes of the hyperbola.
- 
= 1
A. y + 2 = ± 
(x + 1)
B. y + 1 = ± 
(x + 2)
C. y + 1 = ± 
(x + 2)
D. y + 2 = ± 
(x + 1)
Answer: D
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Solve the problem. Round your answer, if appropriate.One airplane is approaching an airport from the north at 201 km/hr. A second airplane approaches from the east at 220 km/hr. Find the rate at which the distance between the planes changes when the southbound plane is 36 km away from the airport and the westbound plane is 20 km from the airport.
A. -283 km/hr B. -141 km/hr C. -424 km/hr D. -566 km/hr
Solve the problem.James has set up an ordinary annuity to save for his retirement in 16 years. If his monthly payments are $225 and the annuity has an annual interest rate of 7%, what will be the value of the annuity when he retires?
A. $79,260.33 B. $83,260.33 C. $59,445.24 D. $68,163.88
Solve.The total profit function P(x) for a company producing x thousand units is given by 
Find the values of x for which the company makes a profit. [Hint: The company makes a profit when 
A. x is greater than 2 thousand units B. x is less than 15 thousand units C. x is less than 2 thousand units or greater than 15 thousand units D. x is between 2 thousand units and 15 thousand units
Solve the problem.If you are dealt two cards successively (with replacement of the first) from a standard 52-card deck, find the probability of getting a heart on the first card and a diamond on the second.
A. 
B. 
C. 
D. 