The zurassic zoo charges $11 each for adult admissions and $4 each for each child. the total bill for the 138 people from a school trip was $839. how many adults and how many children went to the zoo?

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