Answer:
Margo will get 78,125 cents on Saturday.
Explanation:
Margo’s Dad offers to give her 5 cents on Sunday.
Then for each day of the week, he offers to give her 5 times the amount from the previous day.
This can be modeled as:

From Sunday to Saturday 6 days have elapsed, therefore she will have :

=
= 78125 cents.
Hence, Margo will get 78,125 cents on Saturday.