#### Answer

100

#### Work Step by Step

$1989\approx2000$
$1870\approx1900$
$2000-1900=100$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

100

$1989\approx2000$
$1870\approx1900$
$2000-1900=100$

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