Solve the problem.Assume that the profit generated by a product is given by 
where x is the number of units sold. If the profit keeps changing at a rate of 
per month, then how fast are the sales changing when the number of units sold is 800? (Round your answer to the nearest dollar per month.)
A. $2121/month
B. $67,882/month
C. $4243/month
D. $5/month
Answer: C
Mathematics
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Evaluate the integral in terms of natural logarithms.
A. 0
B. -2
C. ln 
D. ln 2
Mathematics
Provide an appropriate response.What does the graph of the equation y = 0 represent?
Fill in the blank(s) with the appropriate word(s).
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 2x + 7
A. f-1(x) = - 
B. f(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics
Use a calculator to find the value of the trigonometric function to four decimal places.cos 
A. 1.0697 B. 0.2588 C. 0.1888 D. 0.9997
Mathematics