At a Best Buy store, the annual demand forecast for a Motorola cell phone is 15,600 units. The forecasts are updated weekly, with a one-week time unit. Motorola requires two weeks to fulfill an order, with a setup cost of $400 per order. The holding cost rate is 10%, and each cell phone costs $50. (a) Total setup cost? [Answer format: two decimal places] (b) Total holding cost? [Answer format: integer] (c) Total cost? [Answer format: two decimal places] (Note: Use the same order quantity as in the previous question to prevent rounding errors.) Write your answer(s) as: 1234.56, 7891, 2345.67.

Before providing a detailed response to the question, a key piece of information is missing: the order quantity. To calculate the total setup cost, total holding cost, and total cost, we need to know how many units should be ordered at a time. Since it's not provided, let's assume the Economic Order Quantity (EOQ) is used.

However, to calculate the EOQ, we need the following formula and variables:

\[ \text{EOQ} = \sqrt{\frac{2DS}{H}} \]

Where: - \( D \) is the annual demand (15,600 units). - \( S \) is the setup cost per order ($400). - \( H \) is the holding cost per unit per year.

The holding cost \( H \) can be found using:

\[ \text{Holding cost per unit per year} = \text{Cost per unit} \times \text{holding cost rate} \] \[ H = \$50 \times 10\% = \$5 \]

Now, we can find the EOQ:

\[ \text{EOQ} = \sqrt{\frac{2 \times 15600 \times 400}{5}} \] \[ \text{EOQ} = \sqrt{\frac{12480000}{5}} \] \[ \text{EOQ} = \sqrt{2496000} \] \[ \text{EOQ} \approx 1579 \text{ units} \]

Now, assuming the EOQ is the order quantity:

(a) Total setup cost (TSC):

\[ \text{TSC} = \frac{D}{Q} \times S \] \[ \text{TSC} = \frac{15600}{1579} \times 400 \] \[ \text{TSC} \approx 3955.92 \]

(b) Total holding cost (THC):

\[ \text{THC} = \frac{Q}{2} \times H \] \[ \text{THC} = \frac{1579}{2} \times 5 \] \[ \text{THC} = 789.5 \times 5 \] \[ \text{THC} = 3947.5 \]

Since the instructions ask for the holding cost to be reported as an integer, we round to the nearest whole number:

\[ \text{THC} \approx 3948 \]

(c) Total cost (TC) which is the sum of the total setup cost and total holding cost:

\[ \text{TC} = \text{TSC} + \text{THC} \] \[ \text{TC} = 3955.92 + 3948 \] \[ \text{TC} = 7903.92 \]

Therefore, the final answers are: Total setup cost: 3955.92, Total holding cost: 3948, Total cost: 7903.92.