The answer is 6. This one is tricky if you're rounding to the nearest tenth. You have 9 in the tenth's place and you look at the number to the right which is 8. 8 is near 10, so you round the 9 to a 10, but you can't make the final answer 5.10. That's impossible so instead, you make the 9 into a 0, and add the 1 to the 5. So, your final answer for that will be 6! :) Hope this helped!
