Madison is organizing her bookshelf. she places her favorite shelf. she puts 2 books on the second shelf and puts 4 books on the third shelf. she continues by putting 8 books on the fourth shelf and 16 books on the fifth shelf. she has one more shelf left . if this pattern continues, how many books will go on the last shelf?

Ineed with number 6 , explain how to get 1978

Someone me! if you’re smart you can solve this!

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