Answer
Montana and South Dakota.
Work Step by Step
The row for North Dakota has 8 symbols.
The row for Montana has 5 symbols; the for for South Dakota has 3.
$5+3=8$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 8 - Section 8.1 - Reading Pictographs, Bar Graphs, Histograms, and Line Graphs - Exercise Set - Page 539: 7
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