plz help i have 9 min to finish

Answer:
After 4 weeks, Macy and Robby will have same amount in their accounts.
Step-by-step explanation:
Given,
Amount saved by Macy each week = $12.50
Let,
x be the number of weeks.
M(x) = 12.50x
Amount saved by Robby each week = $7.50
Amount Robby already have = $20
R(x) = 7.50x + 20
For same amount;
M(x) = R(x)
Dividing both sides by 5
After 4 weeks, Macy and Robby will have same amount in their accounts.
Keywords: function, division
Answer:
Macy: 0 + 12.50x
Robby: 20 + 7.50x
After 4 weeks, they will have the same amount of money. (Both will have $50 by then)