As the number of pages in a photo book increases, the price of the book also increases. There is an additional shipping charge of 15%. The price of a book can be modeled by the equation below, where P = the price of the book, 20 is the printing charge, 0.5 is the charge per page, and x = the number of pages:
P = (20 + 0.5x) + 0.15(20 + 0.5x)
Jennifer wants to purchase a book but only has $62.10 to spend. What is the maximum number of pages she can have in her book?
Everything's already there, you just to identify the value for P. Since $62.10 is the maximum budget Jennifer can spend, we can conclude that this is also the maximum price of the book. (P = $62.10)
To get the number of pages she can have, simply substitute the value of P in the equation such that: P = (20 + 0.5x) + 0.15(20 + 0.5x) $62.10 = (20 + 0.5x) + 0.15(20 + 0.5x)
