Patrick starts hiking at an elevation of -418 feet. he ascends to an elevation of 387 and descends of an elevation of 94 feet higher than where he began. he descended 132 feet. what elevation is he at now

To solve this problem you first start out at an elevation of -418 ft. To ascend you add 387 to -418 to get -31 ft. Next, he descends to an elevation that is 94 ft higher than -418 ft. To get this you add 94 ft to -418 to get -324 ft. Finally, he descended 132 ft so subtract 132 from -324 to get a final elevation of -456 ft.

The bystander effect  for some reason my history teacher was talking about this