Mr. Richardson is driving to a town 85 miles away. He drives 35 miles per hour for 2 hours before stopping for lunch. He drives 6 more miles and stops for gas. Which expression shows how many miles, m, Mr. Richardson has left to drive?

85 - (35 x 2) - 6 = m
85 - 35 - 2 - 6 = m
(85 - 35) x 2 - 6 = m
85 - 35 + 2 - 6 = m

85 - (35 x 2) + 6 = m