John, rick, and molli can paint a room working together in 6 hours. alone, john can paint the room in 12 hours. if rick works alone, he can paint the room in 15 hours. write an equation comparing the group rate to the sum of the individual rates. then find how long it will take molli to paint the room if working alone.

Francisco's credit card has an apr of 28.98%, calculated on the previous monthly balance. his credit card record for the last 7 months is shown in the table below francisco is trying to figure out what this all means. answer the following questions: what is the total amount that francisco has paid in interest over the 7 months? what is the total amount that francisco has made in payments over the 7 months? how much of francisco's payments have gone to paying down the principal on his account? what is francisco's new balance at the end of month 8? what will francisco be charged for interest for month 8?