Respuesta :
So, let's solve it!
If he rose 450:
1200 + 450 = 1650
If he descended 150:
1650-150 = 1500
1500 feet, his net gain is -300 feet, his loss is 300 feet
If he rose 450:
1200 + 450 = 1650
If he descended 150:
1650-150 = 1500
1500 feet, his net gain is -300 feet, his loss is 300 feet