Distribute(x+2)(x+9)a) x^2+15x+18b) x^2+6x+11c) x^2+7x+9d) x^2+11x+18
1 answer:
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Answer:
The maximum cost is 41 dollars per necklace.
Step-by-step explanation:
The average cost in dollars/necklace is given by :
.....(1)
Where
x is the number of necklaces that are created
To maximize the cost, find the value of x by putting dC/dx = 0
Now put the value of x = 7 in equation (1).
Hence, the maximum cost is 41 dollars per necklace.