Multiply.1389 × 39
A. 4157
B. 54,171
C. 41,679
D. 16,668
Answer: B
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Write the trigonometric expression as an algebraic expression containing u and v.sin(tan-1 u - tan-1 v)
A. 
B. 
C. 
D. 
Solve the problem.A farmer has 1500 feet of fence with which to fence a rectangular plot of land. The plot lies along a river so that only three sides need to be fenced. Estimate the largest area that can be fenced.
A. 225,000 ft2 B. 337,500 ft2 C. 421,875 ft2 D. 281,250 ft2
Evaluate the integral.
A. 
B. 
C. 12
D. 36
The rate of production of a new line of products is given by 
, where x is the number of items and t is the number of weeks the product has been in production. Assuming that 
when
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