One month we drove 840 miles and our automobile costs were $582

The next month we drove 986 miles and our automobile costs were $707

The next month we drove 705 miles and our automobile costs were $599

The next month we drove 1344 miles and our automobile costs were $841

The next month we drove 1211 miles and our automobile costs were $701

The next month we drove 1922 miles and our automobile costs were $1058

Based on this :

1. If we are away and do not drive at all what would you expect our automobile costs to be for the month? _$______________
2. If we drive exactly 750 miles in a month what do you expect our automobile costs to be? $_________
3. What is the % of reliability of these predictions?__________%
4. your name_______________________________