does attend the stem exposed to 2022 event you will be required to log on to the internet and join a virtual conference what device are you likely to use mean were going virtual answer asap

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point