A cave diver dropped into a cave 398 feet under ground. Find the absolute value of this number.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The anwser cause i do not understand just plez

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?