Suppose that the revenue function for a certain product is given by 
, where x is in thousands of units and R is in thousands of dollars. Find the marginal revenue (in thousands of dollars per unit) when 4,000 units are sold. Round your answer to two decimal places.
?
A. 33.79
B. -29.48
C. 32.48
D. 29.48
E. 22.48
Answer: D
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 3 for r(t) = (5t - 2t4)i + (8 - t)j + (3t2 - 6t)k
A. a(3) = -216i - j + 6k B. a(3) = -54i + 6k C. a(3) = -216i + 6k D. a(3) = 216i + 6k
Provide an appropriate response.Shareholder ratios translate the overall results of business operations so that they can be compared in terms of a share of stock.
A. True B. False
For the given functions f and g, find the requested composite function.f(x) = -6x + 9, g(x) = 3x + 3; Find the function g ? f.
A. -18x - 24 B. -18x + 30 C. 18x + 30 D. -18x + 27
Use a graphing calculator to find the sum of the geometric sequence. Round answer to two decimal places, if necessary.
A. 69 B. 240 C. -732 D. -2460