Answer
See below
Work Step by Step
A complex number is a number that has imaginary numbers and can be expressed in the form $a+i*b$
$a,b$ are real numbers and $i^2=-1$
The complex number $28+4*i$ has real part $28$ and imaginary part $4$.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 1, Equations and Graphs - Chapter 1 Review - Concept Check - Page 169: 16
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