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**vc15ao4** 3) IN math club, 1 team sold 2 different types of shirts. T shirts sold for 9 dollars a piece while sweatshirst sold for 16 dollars a piece. The secretary misplaced the individualized order forms but knows 57 total people placed an order and has written a check in the amound of 751 dollars to cover the entire order. If x represents the number of t shirts ordered and y the number of sweatshirts ordereed, choose the system of equations that can be used to find x and y. Do not solve.