Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 1 - Foundations for Algebra - 1-8 An Introduction to Equations - Practice and Problem-Solving Exercises - Page 57: 49



Work Step by Step

To find the year in which about 22 million bicycles were sold, substitute 22 for y in the equation. 22=0.3x+15 Create a table to solve the equation. The table will list possible values of x and the result when that value for x is used in the equation. Look for the result closest to 22. x− 0.3x+15−−−−−−−− 10 18 20 21 21 21.3 22 21.6 23 21.9⟶ 23 years after the initial date is the nearest to 22 million 24 22.2 To find the actual year, you must add 1981 to the number of years since 1981. 1981+23=2004
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