She should start on the x axis (the one that's horizontal or goes left to right) and should go to the right first. Right is positive and the first number is a positive three so she would go to the right three units first.
2.8
The tenths place is right after the decimal, so when we round 2.794 to the nearest tenths place, we get 2.8
Hope this helps! Have a good day :)
His father can drive 25 days without the warning light