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1) Describe an exponential growth function and describe its graph.
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2) In the “General Growth Formula” shown below, state what A, P, r, and n represent.
A = P(1 + r)n
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3) Explain three situations that show how the formula in the previous question can be used in the real world.
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6) Explain the difference between a constant increase situation and an exponential growth situation.
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8) What is the general form for exponential growth?
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In Example #3 (rabbits) in the link to "Exponential Growth" in the lesson area the problem is: Thirty rabbits are introduced to a secluded area with no predators. Assume that the rabbit population doubles every six months. How many rabbits will be in the area after four (4) years?
Notice that the answer to this problem is 7680 rabbits which is quick growth over a short period of time. This problem demonstrates exponential growth.
Refer to the solution of Example #3 in the content area to solve the next five problems.
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Constant Increase and Exponential Growth
In the next four questions, an equation is given. Tell whether the graph is linear or exponential. If the graph is exponential, tell if it is growth or decay.
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A large company is making long-range budget plans. This year Smart Mart went from 2400 employees to 2520 employees. The number of employees may be increasing at a constant rate of 120 employees a year OR exponentially by 5% per year. For the next ten problems, refer to the chart below to answer the questions.
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30) Describe the graph of a function representing exponential decay.
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31) What possible values can the growth factor have in an exponential decay equation?
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In Example #1 (town population) in the link to "Exponential Decay" in the lesson area the problem is: A town with a population of 64,500 is losing 3% of its population each year. At this rate, how many people will be left in the town after 15 years?
Notice that the answer to this problem is 40,845 people and shows a sharp decline over a short period of time. This problem demonstrates exponential decay.
Exponential Decay
Refer to the solution of Example #1 under Exponential Decay to solve the next three problems.
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37) In Example #1 in the link to "Constant Increase and Exponential Growth," a comparison of constant growth and exponential growth is examined over an 7-day period. Which option is the better choice after 30 days? Explain how you determined the answer.
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38) If you were directed by your school to complete Offline Activities for this course, please enter the information on the Log Entry form. |
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