Melissa runs a graphic design business. She charges by the page, and has a set-up fee. The table shows her earnings for the last few projects. What is her per-page rate and the set-up fee?

Question

TABLE HERE!!!!!

Cost ($): $185, $335, $485, $635

Total Pages: 2, 4, 6, 8

Please be descriptive about how to solve this.

Answer 1

It's all about understanding the charging process here. The set-up fee is charged only once no matter how many pages, and the per-page rate is the same through out. So we can say the earnings for 2 pages minus the set-up fee and divided by 2 is the same as the earnings for 4 pages minus the set-up fee and divided by 4.

(185 - X) /2 = (335 - X)/4

Solving for X gives you the set-up fee. Plugging X into the left side of the equation gives you the per-page rate.

Good luck!

Answer 2

Each additional 2 pages is $150, so she charges $75 per page

185 = setup + 2(75)

Can you solve for setup and answer?