At a parking garage you can park underground or above ground. the lowest part of the underground parking is 40 feet below ground level. the highest part of the parking garbage is 20 feet above ground level. the limousine parking area is 24 feet below ground level. use positive and negative numbers to represent to locations, with respect to ground level, of the three different parts of the parking garage. which park of re parking garage is closest to the gourd level?