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1. |
Real Estate Julie bought a house for $100,000 five years ago. If the value of the house has appreciated 5% per year, how much is it worth now? |
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A. |
$77,378.09 |
B. |
$119,643.57 |
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C. |
$125,000.00 |
D. |
$127,628.16 |
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Hint |
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2. |
Business An analyst estimates that the computers his company just bought will depreciate at a rate of 25% per year. At this rate, approximately how long will it take a computer to depreciate to 30% of its original value? |
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A. |
3 years |
B. |
4 years |
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C. |
5 years |
D. |
10 years |
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Hint |
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3. |
Radioactivity The half-life of uranium-232 is 72 years. Find the approximate value of k in the formula y = nekt for uranium-232. Assume t is in years. |
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A. |
-0.0048 |
B. |
-0.0024 |
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C. |
0.0012 |
D. |
-0.0096 |
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Hint |
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4. |
A Mickey Mantle rookie card appreciates in value 2% every year. How much was it worth in 1990 if it is worth $35,000 in 2000? |
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A. |
$216,711 |
B. |
$42,665 |
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C. |
$5653 |
D. |
$28, 712 |
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Hint |
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5. |
Two cities have insect problems. The insects in City A increase exponentially according to the equation y = 120,000e0.04t. The insects in City B increase exponentially according to the equation y = 90,000e0.08t. In 15 years, which city will have more insects, and by approximately how much? |
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A. |
City B, by about 30,000 |
B. |
City B, by about 80,000 |
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C. |
City A, by about 80,000 |
D. |
City A, by about 30,000 |
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Hint |
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