In analyzing the accounts for King Company, you notice that, at the beginning of the month, the Accounts Payable account showed a $3,600 credit balance. During the month, a check was written the payment of $1,300 on the amount owed. This check was properly recorded and posted during the month. Please calculate the new balance of the Accounts Payable account at the end of the month.

In the short-run, marginal costs are equal to the change in variable costs as output changes. ( mc = change in variable cost / change in quantity) assume that capital is fixed in the short-run. (a) start with the equation for marginal cost and derive an equation that relates marginal cost of production to the cost and productivity of labor. (b) draw a standard looking short-run marginal cost curve and use the equation you derived to explain its shape.