As the number of pages in a photo book increases, the price of the book also increases. There is an additional shipping charge o
f 15%. The price of a book can be mode by the equation below where, P = the price of the book, 20 is the printing charge, 0.5 is the charge per page, and 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?
Alright, so to find how many pages that can be had, we have to replace P with the amount of money Jennifer has. This is because P is the price of one book, and we want to find the number of pages (x) we can buy for a book price of 62.10 or less.
62.1 = (20 + 0.5x) + 0.15(20 + 0.5x)
62.1 = 20 + 3 + 0.5x + 0.075x
62.1 - 23 = 0.575x
39.1 = 0.575x
39.1/0.575 = x
x = 68
Therefore, in order to buy a book that costs 62.10, the book must have 68 pages.
We just have to compare these two numbers. When you're comparing two negative numbers, the smaller number is the bigger one. Ex. -3 is bigger than -6, so we can say that -3 > -6 (-3 is greater than -6). This means that -7 is larger than -10, which allows you to say that -7 > -10.
First find 25% of 21.5. You can do this by multiplying .25 by 21.5. That gives you 5.375. Subtract that from 21.5. That gives you 16.125. Money only has two decimal places so round 16.125 up to 16.13 and that's your answer! <3
