Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 7 - Exponential and Logarithmic Functions - 7-1 Exploring Exponential Models - Practice and Problem-Solving Exercises - Page 439: 18


y= 129 (1.63)^x is exponential growth The y intercept is 129

Work Step by Step

Exponential growth is defined by 1+ the rate. Exponential decay is 1 - the rate. To find the y-intercept, where x is 0, fill in x as 0 in the equation. So... 129 (1.63)^0. With order of operations, do the exponents first, so 1.63^0= 1, which means 129(1)= 129. So y=129 or the y-intercept equals 129 because when x is 0, the y coordinate is 129.
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