Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 1 - Review: 129

Answer

2.7

Work Step by Step

We can find the increase in life expectancy between 1970 and 1980 by subtracting the life expectancy in 1970 from the life expectancy in 1980. Life expectancy in 1970: 74.7 Life expectancy in 1980: 77.4 $77.4-74.7=2.7$
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