Algebra homework assignment

Juan Gonzalez
HwkAssign21.doc

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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 1989-1999 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.

image1.png

image2.png
______________

4. Use

image3.png
 and
image4.png
 to evaluate the expression
image5.png
.

image6.png
 = __________

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

image7.png
.

image8.png

image9.png
 =  __________

7. Use the given graphs of f and g to evaluate the expression.

image10.png

image11.png
__________

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.