The recursive formula for the total amount Steph has paid after m months is [tex]Cost_{m} = Cost_{m - 1} + 25[/tex] .
A recursive formula takes the form of:
aₙ = aₙ₋₁ + d
The total cost in that formula is the cost from the previous month, added to the cost of this month.
The recursive formula for the amount that Steph has paid is therefore:
[tex]Cost_{m} = Cost_{m - 1} + 25[/tex]
This shows that the cost in any given month is the total cost in the previous month plus the $25 monthly payment.
Find out more on recursive formulas at https://brainly.com/question/13613109.
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