The point a (-7, 5) is reflected over the line x = -5, and then is reflected over the line x = 2. what are the coordinates of a'? (7, 19) (10, 5) (7, 5) (10, 19)

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?