Find all the critical numbers of the function.f(x) = (x + 5)2/5
A. 2
B. 
C. 5
D. -5
Answer: D
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A value of sinh x or cosh x is given. Use the definitions and the identity 
to find the value of the other indicated hyperbolic function.sinh x = - 
, coth x =
A. 
B. - 
C. - 
D. 
Provide an appropriate response. Use the cosine function to find a of a standard right triangle ABC given B = 62.4° and c = 44.8 cm. Round to four significant digits.
A. 96.70 cm B. 0.0103 cm C. 20.76 cm D. 39.70 cm
The management of Acrosonic plans to market the ElectroStat, an electrostatic speaker system. The marketing department has determined that the demand for these speakers is 
, where p denotes the speaker's unit price (in dollars) and x denotes the quantity demanded.
?
Find the marginal revenue function 
.
?
A. 
B. 
C. 
D. 
Simplify.
A. 
B. 10x - 60y2
C. 
D. 