4. Real-world examples please show your work (N, I/Y, PV, PMT FV)! a. Suppose Jose spontaneously decides to treat all his friends to pizza, drinks, and dessert at a dine-in Italian place. He has already spent his excess cash from his paycheck so he decides to put it on his credit card and pay for it later. The total cost for the pizza for his group of friends including the tip is $125.87. His credit card has an interest rate of 20.99%. If he makes payments of $30 per month, how long it take him to pay for that spontaneous purchase? b. Let's say Daryl treats his friends several times during the month and accumulates a debt of $727.56 on his credit card. His credit card and has an interest rate of 20.99%. If he makes payments of $30 per month how long it take him to pay for this generosity which his friends appreciate but he can't currently afford? 5. What does this tell you about credit card usage? What is the risk of using a credit card? When is it a good thing? How can you use a credit card responsibly?