Question 79513
The cost of producing a number of items x is given by c=mx+b, in which b is the fixed cost and m is the variable cost ( the cost of producing one more item.
a)If the fixed cost is $40 and the variable cost is $10, write the cost equation. 
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x is the number of items; 10x is the cost of x items.
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Total Cost = variable cost + fixed cost.
Total Cost=10x+40
C=10x+40
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Cheers,
Stan H.