Answer
See explanation
Work Step by Step
The equation of a circle with the radius of r and center of $(h,k)$
is $(x-h)^2+(y-k)^2=r^2$
and then we plug in $$h=2, k=-1, r=3$$
$(x-2)^2+(y+1)^2=3^2=9$
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 168: 4
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