Solve the problem.A company finds that its marginal revenue from the sale of the xth unit of its product is given by 
Assuming that 
find the total-revenue function R.
A. R(x) = 
x3 - 7x2
B. R(x) = 14x
C. R(x) = 
x3 - 7x
D. R(x) = 
x3 - 
x
Answer: C
Mathematics
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Rotate the axes so that the new equation contains no xy-term. Graph the new equation.x2 + xy + y2 - 3y - 6 = 0
A. 
B. 
Mathematics
Use the fundamental identities to simplify the expression.1 - cos2 ?
A. sin ? B. - sin2 ? C. tan2 ? D. sin2 ?
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Solve the problem.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of - 35 feet. They then rose 10 feet. What was their elevation at this point?
A. -25 ft B. 25 ft C. -45 ft D. 45 ft
Mathematics
Find the solution to the given equation by reading the accompanying graph.2.9x - 9.28 = 0 y = 2.9x - 9.28 
A. {3.2} B. {2.9} C. {-3.2} D. {-2.9}
Mathematics