Answer:
Step-by-step explanation:
Given
Required
Write an equation to determine the payment at a given week
At week 1, she'd have paid $8
At week 2, $16
Week 3, $24
..
.
This leads to arithmetic progression (AP):
8, 16, 24.....
To further solve, we'll make use of AP formula
In this case;
So, the equation becomes
Collect Like Terms
The above represents the amount paid at a particular week;
Amount owed, L is then calculated as follows;