Answer
66
Work Step by Step
The bar heights represent the number of responses.
So the total number of people surveyed equals the sum of all bar's height.
22+26+12+4=66
The sum of all bar's height is 66.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 12 - Data Analysis and Probability - 12-2 Matrix Multiplication - Practice and Problem-Solving Exercises - Page 736: 22
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