What is the answer to this question?

3. solve by graphing: y = 2x + 6 x + y = -3

Answer these questions showing your work plz

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!