Julia’s score is y and Tina’s score is y + 6.
Step-by-step explanation:
Let us take Julia’s score be y.
First Tina scored 4 points more than Julia, so the expression is y + 4.
Then, Tina earned 2 points as extra credic, now the expression becomes
(y + 4) + 2 = y + 6.
Hence Julia’s score is y and Tina’s score is y + 6.
