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It costs $$d$$ dollars to buy $$s$$ sandwiches. At this rate, what is the cost of $$s+2,850$$ sandwiches, in dollars?
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A.$$\frac{sd+s}{2,850d}$$
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B.$$\frac{sd+d}{2,850d}$$
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C.$$\frac{sd+d}{2,850s}$$
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D.$$\frac{2.850d+sd}{s}$$
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E.$$\frac{2,850s+d}{d}$$
D显示答案
