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 - Practice and Problem-Solving Exercises: 32

Answer

A(n)=A(n-1)+15 ; A(1)=23

Work Step by Step

The formula for a recursive equation is A(n)=A(1-n)+c (c is the common difference) We can find c by subtracting the first and second terms from each other. c=38-23 c=15 This gives us the equation A(n)=A(n-1)+15 ; A(1)=23 And since we know the first term in the sequence, we have to list in next to the formula.
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