Maria, the owner of a hockey rink, received an invoice for $14,900 that had payment terms of 3.5/10,n/30. She made a partial payment of $1,380 during the discount period. a. Calculate the amount credited. Round to the nearest cent b. Calculate the balance on the invoice after the partial payment was made. Round to the nearest cent The rate of markup on cost on a product selling at $66.05 is 47%. a. What is the cost of the product to the retailer? Round to the nearest cent b. What is the rate of markup on selling price? % Round to two decimal places