Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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The value of a car decreases by 12% each year. What would be the annual
decay factor or multiplier?
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2.
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Find the multiplier for 11.8% growth.
a. | 11.8 | c. | 88.2 | b. |
1.118 | d. | 0.882 |
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3.
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Determine whether the equation could represent exponential growth or decay.
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4.
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Determine whether the equation could represent exponential growth or
decay. 
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5.
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| A culture of bacteria
triples by the end of each hour. If there were initially 40 bacteria in a culture, how
many bacteria should there be after 3 hours? |  | | |
a. | 1,728,000 bacteria | c. | 120 bacteria | b. | 1080 bacteria | d. | 320 bacteria |
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6.
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| A bicycle depreciates at a rate of
15%. Therese bought a bicycle for $250. How much should it be worth 6 years
later? |  | | |
a. | $225.00 | c. | $94.29 | b. | $250.00 | d. | $578.27 |
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7.
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The height of the corn stalk in
inches over the first 8 weeks of growth could be roughly modeled by the function
h(t)
= 2(1.6 t)
where t is measured in weeks.
On which
week of growth would the corn stalk grow to 21 inches? |  | | |
a. | week 1 | b. | week 3 | c. | week
4 | d. | week 5 |
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8.
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| A person was modeling a growing
population with a growth factor of 1.5 using pennies. They started with 4 pennies and
flipped all 4 pennies. For every penny that landed heads up another penny was added to the
pile. Then, the new pile of pennies are all flipped and again for each one landing on heads
another penny was added. The process is repeated several more times. | | | |
Which of the below
would the most reasonable number of pennies to be expected to be in the pile after pennies were added
just after the 5 th flip?
a. | 6 pennies | c. | 30 pennies | b. | 14 pennies | d. | 100 pennies |
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9.
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The equation for compound interest is  where P is the initial amount invested, r is the interest rate as a decimal, n is the number of times compounded annually, and t is the number of years. Determine the value of the
account if the initial investment is $8,000 compounded monthly at a rate
of 6% after 10 years.
a. | $8409.12 | c. | $14,326.78 | b. | $8480.00 | d. | $14,555.17 |
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10.
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Which investment would be worth the most after 20
years?
a. | An initial investment of $3000 compounded
annually at a rate of 12% after 20 years.
| b. | An initial investment of $3000
compounded quarterly at a rate of 11.9% after 20
years.
| c. | An initial
investment of $3000 compounded continuously at a rate of 11.8% after 20
years.
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