Bill buys a red marble and a blue marble. if the total weight of 3 such marbles and 5 such marbles is 84, and the total weight of 12 such red marbles and 5 such blue marbles is 282, what is the weight of the red marble and the blue marble respectively?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

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?