Exam 4: Techniques of Differentiation With Applications
Exam 1: Functions and Linear Models100 Questions
Exam 2: Nonlinear Functions and Models88 Questions
Exam 3: Introduction to the Derivative140 Questions
Exam 4: Techniques of Differentiation With Applications106 Questions
Exam 5: Further Applications of the Derivative85 Questions
Exam 6: The Integral71 Questions
Exam 7: Further Integration Techniques and Applications of the Integral117 Questions
Exam 8: Functions of Several Variables133 Questions
Exam 9: Trigonometric Models66 Questions
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An offshore oil well is leaking oil and creating a circular oil slick. If the radius of the slick is growing at a rate of 7 miles per hour, find the rate at which the area is increasing when the radius is 6 miles. (The area of a disc of radius r is
.)

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For the cost function, find the marginal cost at the given production level x . 

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The soap bubble I am blowing has a radius that is growing at a rate of 9 cm/s. How fast is the surface area growing when the radius is 14 cm? (The surface area of a sphere of radius r is
.)

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Your Porsche s gas mileage (in miles per gallon)is given as a function M ( x )of speed x in miles per hour. It is found that
. Find M (30), M (70)and M (95).

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Find the indicated derivative.
Please round the answer to the nearest hundredth.

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