Test 2, Math 121
Mett, Spring 2003

NOTE:  If the display below is distorted, you can obtain a RTF download which might be easier to read.

 

1. Identify the expression that can be used to find the equation for the slope of the graph of the functionat a given x-value.

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

2. Find

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

3. From 1991 through 1998, the annual revenue per share R (in dollars) for a company traded on Wall Street can be modeled by

whererepresents the year 1991. At what rate was the company’s revenue per share changing in 1995?

 

[A] $6.33 per year

 

[B] $0.63 per year

 

[C] $0.61 per year

 

[D] $0.06 per year

 

[E] None of these

 

4. Find the average rate of change ofon the interval

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

 Find the derivative of the function (do not simplify).

 

5.

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

 Find the derivative of the function (do not simplify).

 

6.

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

7. The temperature T of some food, once it is put into a refrigerator, is modeled by

where t is the time (in hours). Find the rate at which the food is cooling when

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

8. Use the General Power Rule to find the derivative of the function.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

9. Find the derivative of the function.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

10. An initial deposit of $800 is made to start an account with an annual interest rate of r% (in decimal form) compounded monthly. At the end of 3 years, the balance is

Find the rate of change of A with respect to r when

 

[A] $33.03 per 1%

 

[B] $36.33 per 1%

 

[C] $31.56 per 1%

 

[D] $33.08 per 1%

 

[E] None of these

 

11. Find the derivative of the function.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

12. Find the second derivative of the function.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

13. Determine the intervals on which the function is increasing or decreasing.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

14. The height s at time t for an arrow shot upward from a height of 32 feet is

where s is in feet and t is to the nearest hundredth of a second.

Find the time interval on which the arrow is falling.

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

15. Find the absolute extrema of the function on the closed interval.

 on

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

16. A retailer has determined the cost C for purchasing and warehousing x units of a product to be

The delivery truck can bring at most 130 units per shipment. Find the order size that will minimize the cost.

 

[A] 65 units

 

[B] 70 units

 

[C] 68 units

 

[D] 77 units

 

[E] None of these

 

17. Find the intervals on which the graph ofis concave upward and those on which it is concave downward.

 

 

[A]

 

[B]

 

[C]

 

[D]

 

[E] None of these

 

18. Find all relative extrema of the function.

 

 

[A]

 

[B]

 

[C]

 

[D] The function has no relative extrema.

 

[E] None of these

 

19. A parts assembler works the 3:00 p.m.-to-11:00 p.m. shift after having spent the early part of the day at another job. The number of assemblies N the worker has completed after t hours is given by

At what time is the worker assembling parts at the greatest rate?

 

[A] 4:45 p.m.

 

[B] 4:40 p.m.

 

[C] 5:40 p.m.

 

[D] 5:10 p.m.

 

[E] None of these

 

20. In marketing a certain item, a business has discovered that the demand for the item is represented byThe cost of producing x items is given byFind the price per unit that yields a maximum profit.

 

[A] $0.94

 

[B] $0.61

 

[C] $0.80

 

[D] $0.75

 

[E] None of these

 

 

ANSWERS


URL = http://www.runet.edu /~cmett/121/s03/documents/test2/test2.html
Document last modified: Wednesday, April 30, 2003 at 08:31:07 AM (EDT)
If you have any questions or suggestions, please contact me in Walker 240, (540) 831-5026, or cmett@runet.edu

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