You have the option of downloading 12 songs online for $10.68 or 9 songs for $7.38.which is the best deal?

Just tell me how to set up the equation.

Which one is the correct answer, and why?

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?