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My test scores have been 85,80,95 and 65. What must I earn on my next test to have a mean score of at least 80. Please show work

My test scores have been 85,80,95 and 65. What must I earn on my next test to have a mean score of at least 80. Please show work
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My test scores have been 85,80,95 and 65. What must I earn on my next test to have a mean score of at least 80. Please show work

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User PheliX
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Hope that helps! Let me know if you’d like me to clarify something :)
My test scores have been 85,80,95 and 65. What must I earn on my next test to have-example-1
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User Kennia
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