Solve the problem.Use the following graph, which shows the sales of digital music players, in millions, at a national electronics retail store for the years 2005-2012. Use the graph to represent the set in roster form.
20052006200720082009201020112012YearThe set of years included in the graph in which digital music player sales were between 3 million and 5 million.
A. {2008, 2009, 2010}
B. {2009, 2010}
C. {2008, 2009}
D. {2007, 2008, 2009}
Answer: C
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Find a linear equation whose graph has the indicated slope and passes through the given point.slope -6, point (-2, -6)
A. y = 6x - 6 B. y = -6x + 18 C. y = 6x + 6 D. y = -6x - 18
Solve the problem.An audio speaker that weighs 50 pounds hangs from the ceiling of a restaurant from two cables as shown in the figure. To two decimal places, what is the tension in the two cables? 
A. Tension in right cable: 35.90 lb; tension in left cable: 41.59 lb B. Tension in right cable: 35.90 lb; tension in left cable: 14.10 lb C. Tension in right cable: 14.10 lb; tension in left cable: 41.59 lb D. Tension in right cable: 41.59 lb; tension in left cable: 35.90 lb
The Armstrongs wish to establish a custodial account to finance their children's education. If they deposit $100 monthly for 10 years in a savings account paying 6% /year compounded continuously, how much will their savings account be worth at the end of this period? Round your answer to the nearest dollar. ?
A. $12,100 B. $17,654 C. $18,567 D. $16,442
Solve the problem.A projectile is fired from a cliff 300 feet above the water at an inclination of 45° to the horizontal, with a muzzle velocity of 300 feet per second. The height h of the projectile above the water is given by 
where x is the horizontal distance of the projectile from the base of the cliff. How far from the base of the cliff is the height of the projectile a maximum?
A. 703.13 ft B. 1003.13 ft C. 2409.38 ft D. 1406.25 ft