Solve the problem.The manufacturer of a CD player has found that the revenue R (in dollars) is
when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
A. $627,200
B. $78,400
C. $313,600
D. $156,800
Answer: B
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Solve the problem.For a selected group of news markets, the number n of daily newspapers was modeled by the system n = 9.1t + 191.3 for morning newspapers n = -15.7t + 692.4 for evening newspapers,where t is the number of years since 1980. Find an expression for the difference between the number of morning newspapers and the number of evening newspapers in this group of markets t years after 1980.
A. -182.2t - 676.7 B. -13.2t - 883.7 C. 24.8t - 501.1 D. -6.6t + 883.7
Find the given Sn for the arithmetic series.If a1 = 12 and d = -5, find S29.
A. -3364 B. -3509 C. -1682 D. -7424
Evaluate.53
A. -15 B. 15 C. 125 D. -125
Solve the system.x2 + 3xy + y2 = 4x2 - 3xy - y2 = 4
A. {(2, 0), (-2, 0)} B. {(2, 0), (-2, 0), (2, -6), (-2, 6)} C. {(2, -6), (-2, 6)} D. {(0, 2), (0, -2), (2, -6), (-2, 6)}