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1. |
The population of fish in Mark's lake is 500 this year. If the population increases by 6.9% a year, what number can Mark multiply this year's population by to estimate the fish population in the lake next year? |
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A. |
1.69 |
B. |
6.9 |
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C. |
1.069 |
D. |
0.0931 |
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Hint |
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2. |
Suppose your parents buy a new car for $21,000. What will the value of the car be in 5 years if the car depreciates by 10% each year.? |
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A. |
$15,309 |
B. |
$11,160 |
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C. |
$12,400 |
D. |
$10,044 |
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Hint |
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3. |
Identify the decay factor in the equation p = 1,508,069 × 0.89n where p is the bacteria population and n is the number of days after a vaccine was administered. |
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A. |
n |
B. |
1,508,069 |
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C. |
0.89 |
D. |
p |
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Hint |
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4. |
Which equation represents exponential growth? |
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A. |
y = 250 × 0.4c |
B. |
y = 250 × 0.25x |
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C. |
y = 250 × 4x |
D. |
y = 250 ·  x |
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Hint |
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5. |
Which equation represents exponential decay? |
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A. |
y = 63 × 4x |
B. |
y = 63 × 4.4x |
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C. |
y = · 63x |
D. |
y = 63 × 0.4x |
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Hint |
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