A company that manufactures electronic items sells them for \\( \\$ 130 \\) each. They need to sell 640 items per month to break even. If the fixed costs are \\( \\$ 24,000 \\) per month, what are the variable costs per item? Round to the nearest cent Anna sells a certain pair of earrings at her store for \\( \\$ 48.80 \\) per pair. Her overhead expenses are \\( \\$ 6.00 \\) per pair and she makes \45.00 operating profit on selling price. a. What is her amount of markup per pair of earrings? Round to the nearest cent b. How much does it cost her to purchase each pair of earrings? Round to the nearest cent