Stefanek Budget Edmund and Lydia Stefanek of Little Rock, Arkansas, are using Excel to track their family budget to determine whether they can afford the monthly loan payments that would come with the purchase of a new house. The couple is considering a $285,000 mortgage at a 4.30 percent interest rate to be paid back over 25 years. They want to know the impact that this mortgage willhave on their budget. Complete the following: