Marika is training for a track race. She start sprinting by 100 yards. She gradually increases her distance, adding 4 yards a da y for 21 days. the explicit formula that models this situation is an=100+(n-1)4. how far does seh sprint on day 21
1 answer:
Answer:
180 yards
Step-by-step explanation:
The number of yards she sprints on day 21 can be found by evaluating the formula with n=21.
<h3>Solution</h3>
a21 = 100 +(21 -1)4 = 100 +(20)(4) = 100 +80 . . . . . use 21 in place of n
a21 = 180
Marika sprints 180 yards on day 21 .
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