Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 11 - Further Topics in Algebra - 11.1 Sequences and Series - 11.1 Exercises: 51

Answer

$343$

Work Step by Step

$\sum_{i=1}^5 (3^i-4)$ $=(3^1-4)+(3^2-4)+(3^3-4)+(3^4-4)+(3^5-4)$ $=-1+5+23+77+239$ $=343$
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