Answer:
170.6
Explanation:
170.55 ≈ 170.6
When you are rounding numbers, you have to look at the digit after the digit you are rounding to. So if you are rounding to the nearest tenth, you need to look at the digit next to it which is the hundredth. If the hundredth is 1-4, then you round down. If the hundredth is 5-9, then you round up. Since the hundredth is 5, you round the 5 in the tenth place up to 6.