| |
| |
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? |
| |
|
A. |
$127,628.16 |
B. |
$125,000.00 |
| |
|
C. |
$77,378.09 |
D. |
$119,643.57 |
| |
|
Hint |
|
| |
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? |
| |
|
A. |
4 years |
B. |
5 years |
| |
|
C. |
3 years |
D. |
10 years |
| |
|
Hint |
|
| |
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? |
| |
|
A. |
17,600 years |
B. |
19,200 years |
| |
|
C. |
20,700 years |
D. |
15,300 years |
| |
|
Hint |
|
| |
4. |
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? |
| |
|
A. |
City A, by about 80,000 |
B. |
City A, by about 30,000 |
| |
|
C. |
City B, by about 80,000 |
D. |
City B, by about 30,000 |
| |
|
Hint |
|
| |
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. When will the cities have an equal amount of insects? |
| |
|
A. |
at t = 7.89 years |
B. |
at t = 3 years |
| |
|
C. |
at t = 7.19 years |
D. |
at t = 34.66 years |
| |
|
Hint |
|
|
|