For the spring semester 2009, part time students at a college paid $486 per credit (unit or hour) for tuition and paid a mandatory part time student fee of $20 per semester. Let T be the total one-semester cost (in dollars) of tuition plus part time students fee for c credits of classes. (complete all parts).   a. Find the slope of the linear model that is described this situation. What does it mean in this situation? The slope is __. The tuition increases by $__ per credit.   b. Find an equation of the model.   c. Preform a unit analysis of the equation found in part b.

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