Simplify the expression (2/9)^2

a. 4/81
b. 4/18
c. 4/11
d. 2/9

evaluate x/y for x=3/10 and y=4/5

a. 7/50
b. 7/15
c. 3/8
d. 12/50

. a. answers vary b. Yes; the taller the person is, the longer his or her reach. c. The independent quantities were represented by the x-axis, while the dependent _quantities were represented using the y-axis. d. A trend line can generalize the trend in the data. 1-18. a. The graph is in the first quadrant because negative lengths do not exist; the range of the data determines the kind of graph. b. Counting by 10’s makes the graph a reasonable size. c. In this situation, including the origin with the graph is not suggested. It is easier to see the trend line when the data are not bunched together, and this can be done by changing the range of the graph to exclude the origin. d. The graph should include the maximum height (that of Yao Ming) on the x-axis and the height of the tunnel on the y-axis. 1-21. a. b. c. d. e. f. g. h. 1-22. a. –8 b. 29 c

The answer for the first equation would be A) 4/81.

1. Use distributive property

2. Simplify 2 to the 2nd power to 4

3. Simplify 9 to the 2nd power to 81 (4/81)

The answer to the 2nd problem would be C) 3/8.

1. 3/10 * 5/4

2. 3 * 5 over 10 * 4

3. 15 over 10 * 4

4. 15/40

5. 3/8.