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Laura Amatulli
Laura Amatulli
(Rochester Hills - United States)

Teaching 8th grade in a middle school in suburban Detroit I have strong interests in Earth Science and leadership.  I  have been a teacher consultant for our local National Writing Project site, Meadow Brook Writing Project, which keeps me active  ...

Lesson 30: Exponential Functions

Beginning with a formal definition of an exponential function, the lesson then compares the graphs of increasing and decreasing exponential functions. A comparison between exponential and power functions follows, which leads to methods for determining the h value in the power function h(x) = kx^p and the value of the base b in the exponential function f(x) = ab^x. A procedure for solving exponential equations is presented before a population application problem is solved. The lesson concludes with a discussion about using graphs to find approximate solutions to exponential equations.

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