Use logarithmic differentiation to find 
.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: C
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Solve the problem.Find the area between y = ln x and the x-axis from x = 1 to x = 4.
A. 
B. ln 4
C. 4 ln 4 - 3
D. 4 ln 4 - 4
Solve the problem.At lift-off, a rocket weighs 40.6 tons, including the weight of fuel. It is fired vertically, and the fuel is consumed at the rate of 2.65 tons per 1,000 ft of ascent. How much work is done in lifting the rocket to an altitude of 11,000 ft?
A. 6.07 x 105 ft?ton B. 3.40 x 105 ft?ton C. 2.86 x 105 ft?ton D. 3.66 x 105 ft?ton
Solve for the variable.6.8x - 7.5 = 15.62
A. 1.2 B. 3.4 C. 8.12 D. 23.12
Suppose the average costs of a mining operation depend on the number of machines used, and average costs, in dollars, are given by 
,
, wherexis the number of machines used. Over what interval in the domain do average costs increase?
?
A. 
B. 
C. 
D. 
E. 