



 
Hi Admire, The cost C in dollars is made up of the fixed cost F dollars plus the additional cost that depends on the number of blades produced N. This additional cost is N A where A is the extra cost in dollars to produce one more blade. Thus
You are told that the cost C is $300 when the number of blades produced N is 1000, thus
Use the second fact you are given to produce another equation in the variables F and A and then solve for F and A. I hope this helps,  


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