Mathematics, 12.12.2020 17:00 bcox32314

Marika is training for a track race. She starts by sprinting 100 yards. She gradually increases her distance, adding 4 yards a day for 21 days.
The explicit formula that models this situation is an = 100 + (n - 14.
How far does she sprint on day 21?
A. 200 yards
B. 184 yards
C. 180 yards
D. 221 yards

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