Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. Match the systems of linear equations with their
solutions. Tiles x + y = -1 -6x + 2y = 14 infinite solutions x − 2y = -5 5x + 3y = 27 (-1, -6) -4x + y = -9 5x + 2y = 3 (-2, 1) 6x + 3y = -6 2x + y = -2 (3, 4) -x + 2y = 4 -3x + 6y = 11 no solution -7x + y = 1 14x − 7y = 28
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In this case, the billing period has 31 days and Sandras has an unpaid balance of $720 during 28 days and unpaid balance of $720-$400=$320 during 3 days, so the average balance is: