The equations that model the cost and revenue for producing x units are shown. cost: c(x) = 1275 + 2.5x revenue: r(x) = 10x if the company sells every unit it produces, how many units must it sell in order to break even?

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.