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Homework Assignment 2 (2pts each)
Enter the appropriate value to answer the question or solve the problem. 
1. The table shows the number of CD players sold in a small electronics store in the years 19891999 as follows:
Year CD players sold 1989 530 1990 645 1991 560 1992 725 1993 565 1994 565 1995 550 1996 580 1997 700 1998 555 1999 630 What was the average rate of change of sales between 1989 and 1999? __________ CD players/year 
2. Determine the average rate of change of the function f (x) = x 3 – 5x 2 between x = 0 and x = 10. 
3. Use the given graphs of f and g to evaluate the expression.
______________ 
4. Use and to evaluate the expression .
= __________ 
5. Determine the average rate of change of the function f (x) = 9 – 7x between x = 2 and x = 3. 
6. Use the given graphs of f and g to evaluate the expression .
= __________ 
7. Use the given graphs of f and g to evaluate the expression.
__________ 
8. A man is running around a circular track 200 m in circumference. An observer uses a stopwatch to time each lap, obtaining the data in the table as follows:
Time (s) Distance (m) 32 200 70 400 114 600 164 800 220 1,000 282 1,200 350 1,400 What was the man’s average speed (rate) between 70s and 164s? Give the answer to two decimal places, if necessary. __________ m/s 
9. Determine the average rate of change of the function f (x) = x + x 4 between x = 0 and x = 2. 
10. Determine the average rate of change of the function f (t) = t 2 – 4t between t = –5 and t = –4. 