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Intermediate Algebra – Student Workbook – Second Edition 2013

Intermediate Algebra – Student Workbook – Second Edition 2013

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Lesson 3a <strong>–</strong> Introduction to Exponential Functions<br />

Practice Problems<br />

5. In this problem, we look at the characteristics of exponential functions in more depth. For<br />

the following three equations, identify each of the characteristics.<br />

Initial Value (a)?<br />

f(x) = 3.4(1.13) x g(x) = 42(0.62) x h(x) = 1000(1.03) x<br />

Base (b)?<br />

Domain?<br />

Range?<br />

X-intercept?<br />

Y-intercept?<br />

Horizontal Asymptote?<br />

Increasing or<br />

Decreasing?<br />

6. Given f(x) = 50(1.25) x solve each of the following<br />

a) f(5) = b) f(50) =<br />

c) find x when f(x) = 75 d) find x when f(x) = -25<br />

7. Given f(x) = 100(0.90) x solve each of the following<br />

a) f(3) = b) f(30)=<br />

c) find x when f(x) = 25 d) find x when f(x) = 50<br />

Scottsdale Community College Page 115 <strong>Intermediate</strong> <strong>Algebra</strong>

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