if you add y-3 to both sides of the first equation, you will see that it is equal to the second equation, so they are the same line. Therefore, there are infinite solutions to this system
She learned 3 songs in her 12 weeks of summer, so you want to start by dividing the 3 songs by 12 weeks: 3/12 simplify: 1/4 she learned 1/4 of a song each week, meaning the answer is D.