Sami has been saving money since he was a little boy. 4 weeks after his 16th birthday, Sami has $408.28 in his bank account. 12 weeks after his 16th birthday, he has $1014.84 in his bank account. 1. Using x = weeks after birth, and y = $ in a bank account, determine the equation for Sami's bank account. 2. How much did Sami have in his account on his 16th birthday? 3. How much does Sami put into his account weekly?