Intermediate Algebra – Student Workbook – Second Edition 2013

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$Lesson 2a – Assessment - Scottsdale Community College - Math Blog$

Lesson 3a – Introduction to Exponential Functions Practice Problems 8. The rabbit population in several counties is shown in the following table. Assume this growth is exponential. Let t = 0 represent the year 2006 and let “a” represent the initial population in 2006. Let “b” represent the ratio in population between the years 2006 and 2007. Rabbit Population Year Coconino Yavapai Harestew 2006 15000 8000 25000 2007 18000 12800 18750 2008 21600 20480 14063 2009 25920 32768 10547 a) Write the equation of the exponential mathematical model for each situation. Round any decimals to two places. Be sure your final result uses proper function notation. Use C(t) for Coconino, Y(t) for Yavapai and H(t) for Harestew. b) Using these models, forecast the rabbit population in 2012 (to the nearest rabbit) for each county. c) Also using these models, predict which will happen first, The Rabbit Population in Coconino County reaches 60,000 The Rabbit Population in Yavapai Country reaches 340,000 The Rabbit Population in Harestew goes below 5000. Explain your reasoning. Scottsdale Community College Page 116 Intermediate Algebra
Lesson 3a – Introduction to Exponential Functions Practice Problems 9. Assume you can invest $1000 at 5% Simple Interest or 4% Compound Interest (Annual). The equation for Simple Interest is modeled by: A = P + Prt. Compound Interest is modeled by A = P(1+r) t . Given that, your two equations are: S(t) = 1000 + 50t C(t) = 1000(1.04) t a) How much does each investment return after 1 year? b) How much does each investment return after 10 years? c) How much does each investment return after 20 years? d) When would the two investments return the same amount? How much would they return? (Use your calculator and take advantage of the Calc Intersect function) e) Which investment would you go with? Why? Scottsdale Community College Page 117 Intermediate Algebra
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Scottsdale Community College Interm
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Table of Contents Lesson 1a - Intro
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Lesson 1a - Introduction to Functio
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Lesson 1b - Linear Equations In the
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Lesson 1b - Linear Equations Mini-L
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Lesson 6a - Exponents and Rational
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Lesson 6b - Rational Exponents & Ra
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Lesson 6b - Rational Exponents and
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Appendix A: You Try Answers Lesson
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Appendix A: You Try Answers You Try
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Intermediate Algebra – Student Workbook – Second Edition 2013

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