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What properties allow transformation to be used as a problem solving tool

Benito is selecting samples of five values from the table, which row will result in the greatest mean? population data row 1 4 2 2 3 3 row 2 3 3 4 3 2 row 3 2 4 3 4 3 row 4 3 4 4 7 3 row 1 row 2 r

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?