Answer:
The amount when the companies charge the same is 16 tons. The cost of the two companies when they are the same is $7,308.
Step-by-step explanation:
A. You could put an equation into a graphing calculator and analyze the tables. (This is the easier option) or...
B. Write the numbers out by hand. You take 3696 and 4500 as starting values and continue adding the fees on each one. You continue this until you have equivalent costs. This takes awhile, but it will get you your answer.