Final answer:
To write a recursive formula for the number of tulips Marko has, use the formula T(n) = T(n-1) + 5. T(n) represents the number of tulips after n years and T(n-1) represents the number of tulips in the previous year.
Step-by-step explanation:
To write a recursive formula for the number of tulips Marko has, we need to identify the pattern of how the number of tulips changes each year.
Given that Marko currently has 20 tulips and plants 5 more each year, we can observe that the number of tulips can be represented by the recursive formula:
T(n) = T(n-1) + 5
Where T(n) represents the number of tulips after n years and T(n-1) represents the number of tulips in the previous year. Using this formula, we can calculate the number of tulips after any number of years.