Algebra 1: Common Core (15th Edition)

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

Chapter 4 - An Introduction to Functions - 4-7 Arithmetic Sequences - Got It? - Page 278: 5


a) $A(n)=21+(n-1)2$ b) $A(n)=2+(n-1)7$

Work Step by Step

a) We have $A(1)=21$ $A(n)=A(n-1)+2$ $A(n)=A(1)+(n-1)d$ $A(n)=21+(n-1)2$ b) We have $A(1)=2$ $A(n)=A(n-1)+7$ $A(n)=A(1)+(n-1)d$ $A(n)=2+(n-1)7$
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