6. You find yourself driving on a straight, paved road through the desert, and you're cruising at your maximum speed of 55 miles per hour. You see a sign that says Desert City is directly 9 miles ahead. You own a ranch out in the middle of the desert with no roads leading to it. The perpendicular distance from Desert City to the ranch is 4 miles. In particular, there is a right triangle with points comprised of you, the ranch, and the Desert City where you and the Desert City are connected by a 9 mile stretch of payment and the distance between Desert City and the ranch is 4 miles. If you are only able to drive 20 miles per hour through the sandy desert, where should you veer off the pavement and start driving across the sand in order to minimize the amount of driving time