A family goes on a trip. They drive 65 mph. Write an equation using two variables to show a relationship between the number of hours driven, h, and the total of miles drive, m. How far did they drive after 7 hours?

The equation relating the number of hours driven, h, and the total miles driven, m, is:

m = 65h

To find out how far they drove after 7 hours, plug in h = 7 into the equation:

m = 65(7)
m = 455

Therefore, after 7 hours, the family drove 455 miles.