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# Week 3 - Week 3 12 x 11x 6 6 11x 6 11x x6 Check 12(6 6 11(6...

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Week 3 12 11 6 6 11 6 11 x x x x - - + = + - 6 x = Check: 12(6) 6 11(6) - = 72 6 66 - = 7 13 6 3 x x + = - 7 13 6 13 6 3 6 13 x x x x + - - = - - - 16 x = - Check: 5( 16) 8 3( 16) ( 16) 5 6( 16) 3 - + + - - - + = - - 80 8 48 16 5 96 3 - + - + + = - - -99 = -99

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3 27 3 3 x - = - - 9 x = - Check: 3( 9) 27 - - = 27 27 - = - 7 3 7 ( )( ) 15( ) 3 7 3 x = 35 x = Check: 3 (35) 15 7 = 15 15 = \$215 \$156 \$318 \$75 \$25 5 Mean + + + + = = \$157.8 Median: \$25 \$75 \$156 \$215 \$318 Median = \$156
9 7 5 7 5 3 5 7 x x x x + - - = - - - 4 10 x = - 10 4 x = - 5 2 x = - Check: 5 5 9( ) 7 5( ) 3 2 2 - + = - - 45 25 7 3 2 2 - + = - - 45 14 25 6 2 2 2 2 - + = - - 31 31 2 2 - = - 3(6 1) 5(2 ) 15(3) 15 15 15 x x - - = 18 3 10 45 15 15 15 x x - - = 8 3 45 15 15 x - =

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15(8 3) (15 45) x - = × 120 45 675 x - = 120 45 45 675 45 x - + = + 120 720 x = 120 720 120 120 x = x = 6 Check: 6(6) 1 2(6) 3 5 3 - - = 36 1 12 3 5 3 - - = 35 12 3 5 3 - = 7 4 3 - = 3 = 3 8 12 8 5 x x - + = - + No solution 8 12 8 5 x x - + ≠ - +
2 3 3 6 3 x y y y + - = - 2 6 3 x y = - 6 3 2 y x - = 3(2 ) 2 y

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Week 3 - Week 3 12 x 11x 6 6 11x 6 11x x6 Check 12(6 6 11(6...

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