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- 1. Multiple Choice
North Dakota has recently had the fastest growing population out of all 50 states. On Jan 1, 2013, the population of North Dakota was 700,000 people. North Dakota’s population has been growing by 5% per year. Express North Dakota’s population, N, in terms of years since 2013, t.
Check the BEST answer:
N=700,000(1.05)t
N=700,000(1.5)t
N=700,000(1-0.05)t
N=700,000(0.95)t
- 2. Multiple Choice
An air freshener starts with 30 grams of fluid, and the amount of fluid decreases by 12% per day. Express the amount of grams of freshener, Q, that remains, t, days after it has begun being used.
Check the BEST answer: (HINT: that means simplify what is in the parenthesis)
Q=30(1+0.12)t
Q=30(1-0.12)t
Q=30(0.88)t
Q=12(1.30)t
- 3. Fill in the Blank
P = 8(1.23)t
What is the initial quantity?
- 4. Fill in the Blank
P = 8(1.23)t
What is the growth rate?
Write as a percent!
- 5. Multiple Choice
P = 8(1.23)t
Is the function growth or decay?
Check the box:
Growth
Decay
- 6. Fill in the Blank
Q = 3.1(0.78)t
What is the initial quantity?
- 7. Fill in the Blank
Q = 3.1(0.78)t
What is the DECAY rate?
Write as a percent!
CAREFUL!!!
- 8. Multiple Choice
Q = 3.1(0.78)t
Is the function growth or decay?
Check the box:
Growth
Decay
- 9. Fill in the Blank
You start an account with $500 and an interest rate of 6% compounded yearly. How much is in the account after 3 years?
Round to the nearest cent. (two decimal places)
- 10. Fill in the Blank
From 2000 - 2010 a city had a 2.5% annual decrease in population. If the city had 2,950,000 people in 2000, determine the city’s population in 2008.
Round to the nearest..... (these are people)... so whole number!
- 11. Fill in the Blank
You buy a car for $8000 that depreciates at a rate of 11% a year. How much is the car worth after 5 years?
Round to the nearest cent. (two decimal places)
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