Final answer:
The recursive equation for this situation is S_n = S_(n-1) + 0.05S_(n-1). It represents the number of pre-orders in each week, considering a 5% increase from the previous week.
Step-by-step explanation:
The recursive equation for this situation can be represented as:
Sn = Sn-1 + 0.05Sn-1
Where:
- Sn represents the number of pre-orders in the nth week
- Sn-1 represents the number of pre-orders in the previous week
This recursive equation takes into account that each week, the number of pre-orders increases by 5% compared to the previous week.
For example, if you started with 1425 pre-orders in the first week, in the second week it would be:
S2 = S1 + 0.05S1
Substituting S1 with 1425, we get:
S2 = 1425 + 0.05*1425
Calculating this expression gives us the number of pre-orders in the second week.