9.7
You round up or down from the number that is one place to the right of where you are rounding to. In this case, you are given 9.72---- (the rest does not matter because you are only rounding to the tenths place). You round up if the next number over is 5 or greater (5,6,7,8,9) and you round down if the number over is 4 or less (4,3,2,1,0).