Answer
See below.
Work Step by Step
As we can see the sums of the first $n$ consecutive odd integers is $n^2$.
We have $7$ terms, thus the sum is $7^2=49$.
$1+3+5+7+9+11+13=49$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.2 - Arithmetic Sequences and Partial Sums - 11.2 Exercises - Page 788: 87b
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