What is Technical’s monthly fixed fee?

The answer to this is B. The monthly fixed fee is $90 but because of the additional copies that need to be made, the extras will be charged for every copy. This means that for the month of September, they had to pay $72 more for the 400 extra copies that they made.

For the month of October, they made even more copies so they had to pay $105 more than the usual amount of rent. It is important that people will pay their monthly dues on time so that the fees will not go higher in the long run. If the technical engineer would not pay the actual amount needed, he would need to pay more in the months to come and this will only make things more complicated.