Answer: Tina will drive 294 miles in 7 hours.
Explanation: To find the rate at which Tina drives, we divide the total distance by the total time.
Rate = Distance / Time
Given:
Total distance = 210 miles
Total time = 5 hours
Rate = 210 miles / 5 hours
Rate = 42 miles per hour
Now, to find how many miles Tina will drive in 7 hours, we use the rate:
Distance = Rate * Time
Distance = 42 miles per hour * 7 hours
Distance = 294 miles
So, Tina will drive 294 miles in 7 hours.