Artemis starts his hike at an elevation of 350 feet. He descends 60 feet, ascends 135 feet, ascends 250 feet, and finally descends 128 feet. Which equation describes his final elevation in feet? 350 + 60 + 135 + 250 + 128 = 923 B 350 + (-60) + 135 + 250 + 128 803 C 350 + (-60) + 135 + 250 + (-128) = 547 D 350 + (-60) + 135 + (-250) + 128 = 303