please solve these two, thanks!

Charlie has overused his credit card and now has $10,000 in debt. Using an interest rate of j12=18%, calculate how long will it take to pay off this amount if he makes payments of $300 at the beginning of each month. Express your answer in months rounded to 2 decimal places. Your Answer: Answer Janice has decided to lease a new computer system. The computer sells for $2,025. She plans to pay off the lease over two years with monthly payments. Calculate the size of the lease payments if the lease charges 8.4% compounded monthly. Your