Final answer:
To find the function that describes the number of days Kiyree took her daughter to daycare by month, we would need specific details about the daily pattern or regularity of visits. Without additional context, we cannot confidently determine the appropriate function from the given options.
Step-by-step explanation:
The question provides a context where a pattern of behavior (taking her daughter to daycare) is established and we need to find the function that describes this pattern at the end of month n. There isn't enough information provided directly in the question to determine which function is correct. Usually, you would need the exact pattern of days per month to determine the formula. However, we can examine the provided options and ascertain that option A) f(n) = n suggests the number of days is equal to the number of months, which is highly unlikely if the daycare is used regularly. Option B) f(n) = n + f(n) is recursive and doesn't make sense in this context because it implies that the number of days keeps increasing indefinitely each month. Option C) f(n) = 2n + 7 suggests a starting point plus a constant increase per month. Option D) f(n) = 7n - 3 implies a multiple of 7 days minus 3, which could be a weekly pattern with a constant subtracted.
Without additional details about the pattern, we cannot confidently select the correct function. To answer this question accurately, we would need more information about how many days per month Kiyree took her daughter to daycare or any special patterns observed over the months.