Algebra 1: Common Core (15th Edition)

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

Chapter 5 - Linear Functions - 5-3 Slope-Intercept Form - Practice and Problem-Solving Exercises - Page 313: 45


Y=-1000x+25000 $ \fbox{2030}$

Work Step by Step

M=-1000 B=25000 You start out with 25000 bears so that is the y-intercept. The amount of polar bears declines by 1000 each year so the slope is -1000. Make an equation: y=-1000x+25000 Find when y equals 0: -1000x=-25000 x=25 $ \fbox{2030}$
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