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OpenStudy (anonymous):
In the past, a math teacher observed that for every 16 test questions she gives to her students, there are 2 wrong answers given by students. Over the next few months, she intends to give tests with a total of 640 questions. What is a reasonable prediction of the number of wrong answers selected by students on these tests?
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OpenStudy (anonymous):
A 180 B 80 C 140
OpenStudy (anonymous):
@helpme1.2
OpenStudy (anonymous):
|dw:1395617210142:dw|
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