Freya is training for a track race. She starts by sprinting 200 yards. She gradually increases her distance, adding 5 years a da
y for 21 days. Which explicit formula models this situation?
2 answers:
<u>Answer:</u>

<u>Step-by-step explanation:</u>
We are given that initially, Freya started with sprinting 200 yards and then gradually increased the distance by adding 5 yards a day for 21 days.
So our initial value for distance is
and since she keeps on adding 5 yards everyday to her distance so this will be our common difference.
Therefore, the explicit formula will be:

Freya begins started with 200 yards.
Freya then increased her distance by adding five yards a day for two days.
x = 200 + (n - 1)5.
<em>[x = The distance Freya sprints on day 21]</em>
x = 200 + (21 - 1)5
x = 200 + (20) 5 = 300 yards
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