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Outgoing is formatted as negative numbers.<BR><BR>When graphing the data, I would like the absolute value of the outgoing monies displayed, because it more clearly shows the picture of what I'm ...
Nava Almog, Bat-Sheva Ilany, Absolute value inequalities: high school students' solutions and misconceptions, Educational Studies in Mathematics, Vol. 81, No. 3 (November 2012), pp. 347-364 ...
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