Yes, it is possible to construct a regular hexagon with a straight edge and compass I did it in my geometry class.
No solution would be your answer
(8x2.3)= (18.4)
(2.1x4)= (8.4)
Now you should have:
41-9+18.4-15+8.4
9+18= 27
15+8.4= 23.4
Should have:
41-27-23.4= -9.4
He can drive about 680 miles in 10 hours.