Answer
See below.
Work Step by Step
After $n$ months he has paid: $200+25n$. This exists only until he has reached $600$, which is when $n=16$. So for $0\leq n\leq16$, the rule is $200+25n$; for $n\geq 17$, it is $600$.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 12 Sequences and Series - Chapter Review - Page 841: 16
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