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A.
Pic.1
Check the correlation coefficient, and calculate the value.
《Correlation coefficient》
https://www.statisticshowto.com/probability-and-statistics/correlation-coefficient-formula/
Pic.2
Check the range definition and the symbol "{}."
《Range definition》
https://www.mathsisfun.com/data/range.html
Pic.3
Estimete the equation by inserting -25 to "f(x) = -3x + 8."