Intermediate Algebra – Student Workbook – Second Edition 2013

Lesson 2b – Functions and Function Operations
Practice Problems
4. Simplify each of the following functions. Use only positive exponents in your final answer.
a) f(x) = 32x 4 – 3x 7 and g(x) = -6x 4 b) f(x) = 48x 9 – 16x 3 + 4 and g(x) = -8x 3
f ( x)
g(
x)
f (x)
g(x) =
5) Functions f(x) and g(x) are defined in the tables below. Use those tables to evaluate problems
the problems below.
x -3 -2 0 1 4 5 8 10 12
f(x) 8 6 3 2 5 8 11 15 20
x 0 2 3 4 5 8 9 11 15
g(x) 1 3 5 10 4 2 0 -2 -5
a) ( ) b) ( )
c) ( ) ( ) d) ( ) ( )
e) ( ) ( ) f) ( ) ( )
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