Question

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?

x = ______________________ pages

Numerical Answers Expected!

Answer 1

First of all Multiply the .15(20 + 0.5x) = 3 + .075x
Then you have 20 + .5x + 3 + .075x
Add the x's together and the whole numbers together, then move the x to one side and divide to get the x by itself

Answer 2

Once you have solved for x, just plug it into the equation.

Answer 3

so i add 5 and o75 together

Answer 4

P = (20 + 0.5x) + 0.15(20 + 0.5x), and P = 62.10

62.10 = (20 + 0.5x) + 0.15(20 + 0.5x), solve for x

Answer 5

how would i sovle for x do i just add the two numbers with x together

Answer 6

62.10 = 23 + .575x
62.10 -23 = 23-23+.575x
39.10 = .575x
39.10/.575 = .575x/.575
68 = x

Answer 7

so thats the answer

Answer 8

or do i need to plug that in for x

Answer 9

You can plug that in for x to confirm that is the correct answer.

Answer 10

And I would always proof an answer. It helps you understand it better too.

Answer 11

thank u for ur help and the answer was correct

Answer 12

:-)

Answer 13

Don't forget to close the question :-)