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1. |
Express the rate 40 students to 8 teachers as a unit rate. |
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A. |
12 students per teacher |
B. |
5 students per teacher |
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C. |
10 students per teacher |
D. |
4 students per teacher |
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Hint |
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2. |
Solve  |
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A. |
4 |
B. |
3.5 |
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C. |
3 |
D. |
2.5 |
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Hint |
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3. |
Determine whether the triangles are similar. If not, explain why not. |
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A. |
yes |
B. |
no, a = 30 |
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C. |
no, b = 110 |
D. |
no, b = 40 |
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Hint |
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4. |
Similar triangles must have the same ______. |
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A. |
size |
B. |
shape |
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C. |
right angles |
D. |
size and shape |
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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. |
54 times |
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C. |
30 times |
D. |
96 times |
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Hint |
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6. |
A stop sign casts a shadow 8 meters long, while a bush nearby casts a shadow 4.5 meters long. If the stop sign is 3.2 meters high, how tall is the bush? |
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A. |
5.7 meters |
B. |
11.3 meters |
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C. |
1.8 meters |
D. |
4.3 meters |
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Hint |
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7. |
A guy wire is attached to the top of a telephone pole and goes to the ground 8 feet from the base. When Jim stands under the guy wire so that his head touches it, he is 3 feet from where the wire goes into the ground. If Jim is 6 feet tall, how tall is the telephone pole? |
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A. |
16 feet |
B. |
12 feet |
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C. |
20 feet |
D. |
24 feet |
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Hint |
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8. |
On a map with a scale of 1 inch = 80 miles, the distance between two towns is 4 inches. If a person travels 65 miles per hour, how long will it take to travel from one town to the other? |
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A. |
about 16 hours and 15 minutes |
B. |
about 12 hours and 30 minutes |
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C. |
about 5 hours and 20 minutes |
D. |
about 4 hours and 55 minutes |
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Hint |
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9. |
The process of enlarging or reducing an image is called a(n) |
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A. |
dilation |
B. |
illusion |
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C. |
image |
D. |
scale factor |
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Hint |
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10. |
Express $120.00 over 15 hours as a unit rate. |
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A. |
$10.00 per hour |
B. |
$8.00 per hour |
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C. |
$13.00 per hour |
D. |
$12.50 per hour |
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Hint |
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11. |
On a map, the scale is inch = 300 miles. Find the actual distance between two cities that have a map distance of 5 inches. |
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A. |
2,727 miles |
B. |
3,300 miles |
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C. |
3,000 miles |
D. |
1,650 miles |
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Hint |
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12. |
A projector displays an image from 25-millimeter film onto a screen that is 3.5 meters wide. What is the scale factor? |
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A. |
 |
B. |
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C. |
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D. |
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Hint |
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13. |
The table shows the amount of snow during a snow storm. Find the rate of change in the amount of snow from 2:30 to 4:30. |
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A. |
0.80 inch per hour |
B. |
0.33 inch per hour |
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C. |
0.75 inch per hour |
D. |
0.67 inch per hour |
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Hint |
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14. |
The graph shows the population of Washington, D.C. Find the rate of change in population of Washington, D.C. from 1990 to 2000. |
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A. |
-3,100 people per year |
B. |
-3,500 people per year |
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C. |
-3,400 people per year |
D. |
-3,300 people 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. |
- |
B. |
- |
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C. |
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D. |
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Hint |
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16. |
The points given in the table lie on a line. Find the slope of the line. |
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A. |
- |
B. |
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C. |
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D. |
- |
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Hint |
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