Need help with the following financial questions: 1. USA windows charges $500 for the first window, then $300 for each additional
window. Find the maximum number of windows whose total cost is less than
$10 000.

2. A principle of $2000 is invested at 6% per annum simple interest. Let $An be the total amount (principe plus interest) at the end of n years. How many years will it take before the total amount exceeds $6000?