Precalculus A Fuctional Approach to Graphing and Problem Solving
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Section 4.4: Exponential Functions

Problems 1-4
Use your calculator to evaluate these expressions. See Example 7.
Problems 5-12
Use the extended laws of exponents. Be careful about the signs of the terms.
Problems 13-22
See Examples 1 and 2.
Problems 23-26
Use your calculator; see Example 3.
Problems 27-28
See Examples 5 and 6.
Problems 29-30
Use your calculator to help you plot points to graph these functions.
Problems 31-32
These are problems in algebraic simplification. For Problem 31b, algebraically simplify before graphing.
Problems 33-34
See Example 4.
Problem 35
Covert 1 second to a fractional part of a year and then use the formula A = Pert. Then use I = A - P to find I.
Problems 36-39
Use the given formula and a calculator to answer the questions. Round money answers to the nearest cent.
Problems 40-42
Graph the curves by plotting points.
Problems 43-44
Graph the curves by plotting points or using a calculator.
Problems 45-46
Graph the given curve and then use the graph to plot the desired point.
Problems 47-42
Graph these curves by plotting points.

Note: Homework Hints are given only for Level 1 and Level 2 problems. Hints are generally not given for IN YOUR OWN WORDS or Journal Problems. You can also check some sources for homework help on the Links page of this web site. Don't be afraid to ask your instructor or classmates for help. You can also send an e-mail to: smithkjs@mathnature.com.

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© 2011 Karl J. Smith. All rights reserved.