Suppose that a wholesaler expects that his monthly revenue (in dollars) for small television sets will be 
, where x is the number of units sold. Find the marginal revenue, and interpret your answer when the quantity sold is 
variablename="impvar_9e3403a9350b4a27a704c8fe5" />.
?
A. 70. The additional revenue from the 501st unit is about $70.
B. 60. The additional revenue from the 501st unit is about $60.
C. 30. The additional revenue from the 501st unit is about $30.
D. 40. The additional revenue from the 501st unit is about $40.
E. 50. The additional revenue from the 501st unit is about $50.
Answer: D
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Which of the following integers fulfill the following conditions: For n = an integer, n < –2 or
n 
1?
?
A.
?n = –3, n = 1
B.
?n = –1, n = 1
C.
?n = –4, n 
1
D.
n?–2, n = 0
E.
?–2 < n< 1
Evaluate the definite integral. Express the answer in terms of natural logarithms.
A. ln(
)
B. ln(4 + 
)
C. ln 5
D. ln(4 + 
)
Use the properties of logarithms to expand the quantity.
Solve.A $180 fax machine is on sale at 15% off. Find the sale price.
A. $153.00 B. $27.00 C. $1773.00 D. $2.70