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- 1. Multiple ChoiceSuppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.y=5000(0.7)xy=30(5000)xy=5000(1.3)xy=5000xx
- 2. Multiple ChoiceWhich of the following functions shows an initial amount of $15 and an increase of 35% each year?y = 15(35)xy = 15(1.35)xy = 15(0.35)xy = 35(1.15)x
- 3. Multiple ChoiceThe value of a car is $15,000 and depreciates at a rate of 8% per year. What is the decay factor?.081.08.928
- 4. Multiple ChoiceA collectible car has been going up in price by 10% each year. If the car is already worth $29,000, how much will the car be worth in 5 years?$0.29$2,900,000,000$46,704.79$145,000
- 5. Multiple ChoiceThe expression 12(1.015)t models the population of elephants in a wildlife refuge after t years since 1975.
Is the population of elephants increasing or decreasing?IncreasingDecreasing - 6. Multiple ChoiceThe amount of ibuprofen (medicine for headaches) breaks down by 30% each hour. If a person took a 200 milligram ibuprofen, how much will be left after 3 hours?5.4 mg68.6 mg.0054 mg2,400,000 mg
- 7. Multiple Choice
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
$12,800.00
$13,629.44
$17,600.00
$28,098.56
- 8. Multiple Choice
Ash has $8,000 in a savings account. The interest rate is 3% compounded once a year.
To the nearest cent, how much will he have in his account in 4 years?
$9,004.07
$2,2848.80
$9,011.94
$8,242.71
- 9. Multiple Choice
A sailboat that costs $5,950 decreases in value by 11% per year. How much will the boat be worth after 6 years?
$5,884.00
$5,178.97
$2,992.96
$2,957.04
- 10. Multiple Choice
The population of Pallet Town increases by 15% every year. If there are currently 190,000 people living there, what will be the population in 13 years?
If necessary, round your answer to the nearest whole number.
4 people.
22,972 people.
1,169,030 people.
1,188,311 people.
- 11. Multiple Choice
Find the balance in an account that has $300 invested at 6.5% for 4 years compounded semi-annually.
$387.47
$496.50
$7,800.00
$385.94
- 12. Multiple Choice
Katy deposited $90 in a savings account earning 5% interest, compounded quarterly. Which of the following equations could represent the amount of money in her account yearly?
- 13. Multiple Choice
Derrick has $1,000 in a savings account that ears 15% interest, compounded monthly. To the nearest cent, how much will he have in 2 years?
$5,350.25
$1,322.50
$1,025.16
$1,347.35
- 14. Multiple ChoiceDoes the following equation show growth or decay?
y=10,000*(0.76)xGrowthDecay - 15. Multiple ChoiceThe population of Hickory NC, can be modeled by P=6191(1.04)t where t is the number of years since 1995. What was the population in 1995?6191119951.04
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