Darnell and Stephanie have competing refreshment stand businesses Darnell's profit can be modeled with the polynomial c^2 + 3c - 120, where c is the number of items sold. Stephanie's profit can be modeled with the polynomial 3c^2+ - 7c- 400. Write a polynomial that represents the difference between Stephanie's profit and Damell's profit.

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.