Question 15 (6.76 points) 1) Listen Sam refuses to retire until his retirement account has a balance of at least $ 311,603 Sam refuses to make any more deposits the account. The account currently has a balance of $ 110,055 and earns 6% per year, compounded semi-annually. How long does Sam have before he will retire? (You are computing number of years. Round your answer to one decimal place. For example, record 14.294 years as 14.3). Your