Please help. This question is from my final exam
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Mathematics, 21.06.2019 20:00
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?
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Mathematics, 21.06.2019 21:00
Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.
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Mathematics, 22.06.2019 00:00
Two consecutive negative integers have a product of 30. what are the integers?
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Mathematics, 22.06.2019 00:30
Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i
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