Solve the problem.A company knows that unit cost C and unit revenue R from the production and sale of x units are related by 
Find the rate of change of revenue per unit when the cost per unit is changing by 
and the revenue is $4000.
A. $240.00
B. $426.05
C. $564.10
D. $288.00
Answer: D
Mathematics
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Solve the problem.Find the area of the region bounded by y = coth 4x, y = 0, x = ln 2 and x = ln 4.
A. 
B. 
ln 2
C. 
ln 
D. ln 
Mathematics
Find the unit tangent vector T and the principal unit normal vector N. r(t) = 
i + 
j + 3tk
A. T = 
(cos 0.8t)i - 
(sin 0.8t)j ; N = (-sin 0.8t)i - (cos 0.8t)j
B. T = 
(cos 0.8t)i - 
(sin 0.8t)j + 
k ; N = (-sin 0.8t)i - (cos 0.8t)j
C. T = 
(sin 0.8t)i - 
(cos 0.8t)j ; N = (-sin 0.8t)i - (cos 0.8t)j
D. T = 
(cos 0.8t)i - 
(sin 0.8t)j + 
k ; N = (-sin 0.8t)i - (cos 0.8t)j
Mathematics
Make the following conversion in the metric system.355 millimeters to centimeters
A. 35,500 cm B. 3550 cm C. 35.5 cm D. 3.6 cm
Mathematics
Provide an appropriate response.(am)n = 
A. amn B. a C. amn D. am + n
Mathematics