Use logarithmic differentiation to find the derivative of y.y = 
A. 5
B. 
(ln x + ln(x - 3) - ln(x4 + 5))
C. 
D. 
+ 
- 
Answer: C
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Evaluate the line integral along the curve C.
ds, C is the curve r(t) = (3 sin 4t)i + (3 cos 4t)j + 5tk, 2 ? t ? 4
A. - 
B. 
C. 
D. 
Solve the problem.A cab company charges a base rate of $1.50 plus 15 cents per minute. Let C(x) be the cost in dollars of using the cab for x minutes. Write a cost function.
A. C(x) = 1.50x + 0.15 B. C(x) = 0.15x + 1.50 C. C(x) = 1.50x - 0.15 D. C(x) = 0.15x - 1.50
Solve.Let f(x) = 9x + 2 and g(x) = 5x2 + 5. Find f(2) ? g(2) .
A. 400 B. 500 C. 360 D. 450
The quantity demanded each month of the Sicard wristwatch is related to the unit price by the equation 
, where
src="https://sciemce.com/media/3/ppg__cognero__4.4_Optimization_I__media__eacf8152-3cf0-44cc-b6c7-51eac6d9c7b4.PNG" style="vertical-align:middle;" /> is measured in dollars and 
is measured in units of a thousand.
?To yield a maximum revenue, how many watches must be sold?
?
A. 
B. 
C. 
D. 
E. 