Intermediate Algebra – Student Workbook – Second Edition 2013

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

Lesson 3b – More Exponential Functions Practice Problems 11. The table below shows how a Pizza freshly removed from the oven cools over time. Time (minutes) 0 5 9 12 15 18 22 25 30 Temp ( º F) 199.5 184.7 178.1 159.2 141.7 124.6 115.4 104.5 99.3 a) Use your calculator to determine the exponential regression equation that models the set of data above. Clearly indicate what each variable represents. b) Based on the equation found in part a, at what percent rate is the pizza cooling? c) Write and answer a “Read the Data” question (Extracting the data). d) Write and answer a “Read Between the Data” question (Interpolating the data). e) Write and answer a “Read Beyond the Data” question (Extrapolating the data). Scottsdale Community College Page 140 Intermediate Algebra
Name: _____________________ Date: ________________ 1. Consider the functions shown below. Lesson 3b Assessment A. f ) x ( x) (1.023 B. w ) x ( x) 320(0.95 C. y 400(1.12) x D. g ) x ( x) 34.9(1.11 E. p ) r ( r) 172(0.99 F. k ( n) 8452(0.67) n a) Which functions are increasing? ________________________________ b) Which function is increasing at the fastest rate? ___________ What is the growth rate for this function? ___________ c) Which function is decreasing at the fastest rate? ___________ What is the decay rate for this function? ___________ 2. Fred and Wilma purchase a home for $180,000. Using function notation, write a formula for the value, V, of the house t years after its purchase, assuming that the value a) Decreases by $1,500 per year. b) Decreases by 2% per year. c) Increases by $3,100 per year. d) Increases by 6% per year. Scottsdale Community College Page 141 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 Mini-L
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Lesson 6a - Exponents and Rational
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Lesson 6b - Rational Exponents & Ra
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Appendix A: You Try Answers Lesson
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Intermediate Algebra – Student Workbook – Second Edition 2013

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