The cost function C(x) can be expressed as the sum of the fixed cost ($650) and the product of the marginal cost per item ($12) and the quantity of items (x).
The cost function for this problem is C(x) = 650 + 12X
C(x) = Fixed Cost + Marginal Cost x Quantity
Given:
Fixed cost = $650
Marginal cost = $12
Quantity = X
Cost function = C(x)
C(x) = 650 + (12 x X)
C(x) = 650 + 12X
The linear cost function for the given scenario is C(x) = 650 + 12X