13) For the given cost function C(x)=48400+800x+x2C(x)=48400+800x+x2 find: a) The cost at the production level 1350    b) The average cost at the production level 1350    c) The marginal cost at the production level 1350

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A: Please refer to the image below 

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A: "Since you have asked multiple question, we will solve the first question for you. If you want any s...