Answer:The algebraic expression for the number of miles that Mr. Stein drove is
(110 - r) miles
Explanation:
The total distance of the location of the business meeting from the office of Mr. Smith and Mr. Stein is 110 miles.
They drove to the meeting with Mr. Smith driving the first r miles and Mr. Stein driving the rest of the way.
The algebraic expression for the number of miles that Mr. Stein drove would be
(110 - r) miles