Answer:
Equations:
Mia: 10 + 10x = y
Julie: 100 - 5x = y
Solved: (6, 70)
Step-by-step explanation:
Mia: 10 + 10x = y
She already has 10 (10) and gains 10 (+10) per day (x). Total is y gained.
Julie: 100 - 5x = y
She already has 100 (100) and loses 5 (-5) per day (x). Total is y gained.
Then I simply solve
10 + 10x = y
100 - 5x = y
Resulting in (6, 70)