Final answer:
After driving from Austin to Dallas, which is 195 miles, Christopher will have 35 miles worth of gas left in his tank, as his car can drive 230 miles on a full tank.
Step-by-step explanation:
Christopher's car can drive 230 miles on a full tank of gas. He plans to drive from Austin to Dallas, which is 195 miles. To find out how many miles will be left once he arrives in Dallas, we simply subtract the distance of the trip from the full tank range.
Calculation:
- Full tank range: 230 miles
- Distance from Austin to Dallas: 195 miles
- Miles left after the trip: 230 miles - 195 miles = 35 miles
Therefore, once Christopher arrives in Dallas, he will have 35 miles worth of gas left in his tank.