Answer:
Keri and Kaley will have the same amount of money by week 5.
Step-by-step explanation:
First I made a table and on one side I started with Keri's amount which was 600 dollars. On the other side was Kaley's where she started with 200 dollars. Equally, on Keri's side i subtracted 30 per week and on Kaley's side I added 50 per week. If you add and subtract correctly, by week 5 they'll both have the same amount.
my work:
