Answer
$90$
Work Step by Step
$\sum ^{5}_{i=1}\left( 5i+3\right) =\sum ^{5}_{i=1}5i+\sum ^{5}_{i=1}3=5\times \dfrac {n\left( n+1\right) }{2}+3\times n=5\times \dfrac {5\times \left( 5+1\right) }{2}+3\times 5=90$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
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 - Page 1015: 79
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