Ronnie has a credit card that uses the previous balance method. the opening balance of one of his 30-day billing cycles was $4790, but that was his balance for only the first 4 days of the billing cycle, because he then paid off his entire balance and didn't make any new purchases. if his credit card's apr is 15%, which of these expressions could be used to calculate the amount ronnie was charged in interest for the billing cycle?

1. the healthy pantry bought new shelving and financed $7,300 with 36 monthly payments of $267.65 each. suppose the firm pays the loan off with 13 payments left. use the rule of 78 to find the amount of unearned interest. 2. the healthy pantry bought new shelving and financed $7,300 with 36 monthly payments of $267.65 each. suppose the firm pays the loan off with 13 payments left. use the rule of 78 to find the amount necessary to pay off the loan. ! i entered 967.82 for question 1 and 5,455.78 for question 2 and it said it was

3. describe the purpose of the sec. (1-4 sentences. 2.0 points)

Suppose you hold a portfolio consisting of a $10,000 investment in each of 8 different common stocks. the portfolio's beta is 1.25. now suppose you decided to sell one of your stocks that has a beta of 1.00 and to use the proceeds to buy a replacement stock with a beta of 1.55. what would the portfolio's new beta be? do not round your intermediate calculations.