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1. |
Stan the Hot Dog Man sells 100 hot dogs per day for $2 each, so his daily revenue is $200. He estimates that for every 25 cents he increases the price of a hot dog, he will sell 5 fewer. What range of prices can he charge so that his daily revenue is at least $225? |
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A. |
$2.50-$4.50 |
B. |
$3.00-$4.50 |
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C. |
$2.25-$2.50 |
D. |
$2.00-$4.00 |
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Hint |
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2. |
Find the value of cos 62° to the nearest ten-thousandth. |
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A. |
0.8988 |
B. |
1.8807 |
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C. |
0.8829 |
D. |
0.4695 |
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Hint |
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3. |
The angle of depression from the top of one building to the top of a neighboring building is 12°. If the buildings are 50 feet apart, what is the difference between the heights of the buildings? Round your answer to the nearest tenth of a foot. |
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A. |
10.6 ft |
B. |
235.2 ft |
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C. |
10.4 ft |
D. |
48.9 ft |
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Hint |
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4. |
is an acute angle of a right triangle. If sin find cos and tan . |
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A. |
cos and tan  |
B. |
cos and tan  |
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C. |
cos and tan  |
D. |
cos and tan  |
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Hint |
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5. |
Solve . Round measures of sides to the nearest tenth and measures of angles to the nearest degree. |
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A. |
A = 72°, b = 1.3, c = 4.1 |
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B. |
A = 72°, b = 3.9, c = 4.1 |
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C. |
A = 72°, b = 1.3, c = 3.9 |
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D. |
A = 72°, b = 4.1, c = 1.3 |
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Hint |
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6. |
Libby looked out of her airplane window at a 32° angle with respect to the horizontal, and saw the Sears Tower building in Chicago. If the airplane had an altitude of 4000 feet, how far away were they from being directly over Chicago? |
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A. |
2499 ft. |
B. |
6401 ft. |
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C. |
9900 ft. |
D. |
1616 ft. |
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Hint |
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7. |
Find sin 405° by drawing a reference angle. |
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A. |
 |
B. |
1 |
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C. |
 |
D. |
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Hint |
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8. |
Find sin 240° by drawing a reference angle. |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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9. |
What is the period for the graph  |
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A. |
4° |
B. |
90° |
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C. |
180° |
D. |
360° |
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Hint |
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10. |
What is the period and amplitude for the graph  |
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A. |
period is 360°amplitude is 2 |
B. |
period is 360°amplitude is 1 |
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C. |
period is 60°amplitude is 1 |
D. |
period is 180°amplitude is 2 |
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Hint |
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