a. Suppose Daryl 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 $149.45. His credit card has an interest rate of 21.99%. If he makes payments of $25 per month, how long it takes him to pay for that spontaneous purchase and DEVELOP AN EQUATION TO SOLVE FOR