Suppose you live in Los Angeles, California, where the temperature is 60ºF and going down at a rate of 2ºF an hour. You are talking on the phone to your friend who lives in Vancouver, Canada, where the temperature is 35ºF and going up at a rate of 3ºF an hour. If the temperatures continue to change at the same rates, how long would you and your friend have to talk before they would be equal? Write an equation and then solve it.