A person invests 6500 dollars in a bank. The bank pays 6.75% interest compounded semi-annually. To the nearest tenth of a year, how long must the person leave the
money in the bank until it reaches 15700 dollars?

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)