The odometer in Ms. Brown’s car does not work correctly. The odometer recorded 11.5 miles for her last trip to the beauty shop, but she knows the distance traveled is 15 miles. a) What is the absolute error?

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?