a. find the daily cost C(x) of manufacturing x notebook per day.

C(x) = 10,500 + 200x

b. find the cost of producing 50 notebooks per day.

C(50) = 10,500 + 200*50

C(50) = $20,500

c. find the average cost of a computer notebook assuming that 50 notebooks are manufactured each day.

Average cost is total cost divided by the output

AC(50) = C(50)/50

AC(50) = 20500/50

AC(50) = $410

The average cost of a computer notebook is $410 per notebook.

d. how many notebooks should be manufactured each day so that the average cost per notebook is $305?

We need to find x such that C(x)/x = 305

(10,500 + 200x)/x = 305

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x = 100 notebooks