Marty's Tee Shirt​ & Jacket Company is to produce a new line of jackets with an embroidery of a Great Pyrenees dog on the front. There are fixed costs of $ 680 to set up for​ production, and variable costs of $ 41 per jacket. Write an equation that can be used to determine the total​ cost, C(x), encountered by​ Marty's Company in producing x jackets.