OpenStax, Elementary Algebra 2e §1.3 Add and Subtract Integers · Exercise 76 · Arithmetic · Integers
Add and Subtract Integers · Exercise 76
Stock Market During the week of June 22, 2009, the closing numbers of the Dow Jones Industrial Average each day were:
What was the overall change for the week? Was it positive or negative?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Elementary Algebra 2e · §1.3 Add and Subtract Integers · Exercise 76
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