The Sugar Company will choose from two companies to transport its sugar to market. The first company charges $5995 to rent trucks plus an additional fee of $175.50 for each ton of sugar. The second company charges $6500 to rent trucks plus an additional fee of $150.25 for each ton of sugar.

I think we're missing part of your question. The expression for cost for the first company will be:

5995 + 175.5x, where x is the number of tons of sugar

and the expression for the cost for the second company is:

6500 + 150.25x

Please feel free to comment with the rest of the question and I'll happily help if I can.