In 2012 West Corp. had 1,456 employees. In 2013, they employed 3,029 people. What was the percent of the increase in the number of employees at West Corp.?Round to the nearest whole percent.

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?