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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. |
$127,628.16 |
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C. |
$125,000.00 |
D. |
$119,643.57 |
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Hint |
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2. |
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. |
-0.0096 |
B. |
-0.0048 |
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C. |
0.0012 |
D. |
-0.0024 |
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Hint |
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3. |
Paleontology A fossil is found that contains 10% of the amount of carbon-14 found in a living being. About how old is the fossil? |
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A. |
20,700 years |
B. |
15,300 years |
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C. |
17,600 years |
D. |
19,200 years |
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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. |
$42,665 |
B. |
$28, 712 |
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C. |
$216,711 |
D. |
$5653 |
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Hint |
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5. |
Suppose a new car loses value at 10% per year for the first 5 years. When should the owner sell it if they want to receive 75% of what they paid for it? |
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A. |
after 2.73 years |
B. |
after 3 years |
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C. |
after 2.5 years |
D. |
after 2 years |
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Hint |
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