I won't do it for you for that would be totally dishonest, but I'll be a little bit dishonest. This is what you must solve for P to get the answer to the first part.To get the answer to the second part, substitute what you get for P in the blank below, replace the 7 by T, and put 9000 on the right side, and solve for T. That is, fill in the blank with what you got for P above in this: The whole part of the number you get for T is the number of full years after Jan 1, 2005. The decimal part is the fraction of the next year after that. Multiply that decimal part by 365.25 to get the number of days into that next year that the amount was $9000. Then use the number of days in the various months to find out just what date that was. Luck to you! Edwin