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1. |
Express the ratio 18 inches to 2 feet in simplest form. |
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A. |
 |
B. |
 |
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C. |
9 |
D. |
 |
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Hint |
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2. |
Solve  |
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A. |
3.5 |
B. |
2.5 |
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C. |
3 |
D. |
4 |
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Hint |
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3. |
If two triangles are similar, ______. |
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A. |
then only one pair of corresponding sides is congruent |
B. |
then corresponding angles are congruent |
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C. |
then corresponding sides are congruent |
D. |
then only one pair of corresponding angles are congruent |
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Hint |
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4. |
If  ABC is similar to UVW, find the value of x. |
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A. |
39 |
B. |
41 |
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C. |
42 |
D. |
40 |
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Hint |
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5. |
The average human heart beats 72 times in 60 seconds. How many times does it beat in 45 seconds? |
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A. |
84 times |
B. |
96 times |
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C. |
30 times |
D. |
54 times |
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Hint |
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6. |
Assume the triangles are similar. What is the value of x? |
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A. |
10 |
B. |
5 |
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C. |
3.2 |
D. |
20 |
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Hint |
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7. |
The figure is a scale drawing of the east side of a house. In the drawing, the side of each square represents 4 feet. Find the width and height of the door. |
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A. |
4 feet by 10 feet |
B. |
4 feet by 8 feet |
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C. |
4 feet by 12 feet |
D. |
4 feet by 9 feet |
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Hint |
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8. |
If the actual distance between two airports is 375 kilometers and the distance on a map is 8 centimeters, what is the scale for the map? |
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A. |
1:46,875 |
B. |
1:4,687,500 |
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C. |
1:468,750 |
D. |
1:4,687.5 = 2:9,375 |
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Hint |
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9. |
Graph  with vertices A(1, 2), B(4, 1), C(5, 3). Graph the image of with a scale factor of 2. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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10. |
The process of enlarging or reducing an image is called a(n) |
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A. |
dilation |
B. |
scale factor |
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C. |
illusion |
D. |
image |
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Hint |
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11. |
Write a ratio in simplest form. number of shaded squares: total number of squares. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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12. |
An office building casts a shadow that is 15 feet long. A nearby tree casts a shadow that is 2.5 feet long. If the tree is 5 feet tall, how tall is the office building? |
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A. |
30 feet |
B. |
7.5 feet |
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C. |
17.5 feet |
D. |
25 feet |
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Hint |
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13. |
The table compares the age of a cat to the age of a human. Find the rate of change in human years between a cat’s age of 1 and 6? |
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A. |
4.5 human years per year |
B. |
5 human years per year |
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C. |
5.7 human years per year |
D. |
4 human years per year |
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Hint |
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14. |
The graph shows the fuel efficiency for the light duty trucks in the United States. Find the rate of change in the fuel efficiency from 1999 to 2000. |
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A. |
-0.2 mpg per year |
B. |
-0.4 mpg per year |
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C. |
0.075 mpg per year |
D. |
0 mpg per year |
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Hint |
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15. |
The points given in the table lie on a line. Find the slope of the line. |
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A. |
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B. |
- |
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C. |
- |
D. |
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Hint |
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16. |
The graph shows the fees charged by a plumber. Interpret the meaning of the slope as a rate of change. |
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A. |
The plumber charges $40 for each hour worked. |
B. |
The plumber charges $80 for each hour worked. |
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C. |
The plumber charges $80 for each job. |
D. |
The plumber charges $40 for each job. |
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Hint |
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