please answer all questions and show the procedures.

Microtech Incorporated has decided to package its cell phone in a smaller, recyclable package. Additionally, the company will discontinue the practice of shipping each phone with a 250-page user manual and instead will make the manual available online. These changes will result in a Jighter, but more difficult package for shippers to handle. The weight of each packaged phone has dropped from 1.4 pounds to 0.8 pounds as a result of these changes and the freight classification has worsened from 65 to 70. Use the table below to calculate the difference in Microtech's monthly shipping charges if the company ships 12,500 phones per month Class 50 55 60 65 70 77.5 85 92.5 100 Matrix of Weight Breaks and Freight Class (Sicwt)