Answer
$$\sum ^{7}_{i=1} (3i)$$
Work Step by Step
Using sigma notation to represent the given numbers, we find:
$$\sum ^{7}_{i=1} (3i)$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 13 - Sequences and Series - 13.2 Defining Functions Using Sums: Arithmetic Series - Exercises and Problems for Section 13.2 - Exercises and Problems - Page 546: 11
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