Aaliyah went to the 2016 Summer Olympics and watched the US women’s volleyball match against Brazil. 70% of the serves from Brazil were out of bounds. Aaliyah saw 30 serves from Brazil. How many serves from Brazil were out of bounds?

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