Rob bought a hat and 3 shirts for $35. Dan bought 2 hats and a shirt for $20, Which system of equations can be used to find s, the cost of one shirt, and h, the cost of one hat?
h + 38 = 35
2h + s = 20
h+ 38 = 35
2s + h = 20
8 +3h = 35
28 th = 20
8 + 3h = 35
2h + 8 = 20