Math  /  Word Problems

QuestionFind the formula for Marika's daily sprint distance after 21 days: A. an=100+(n1)4a_{n}=100+(n-1) 4 B. an=4+(n1)100a_{n}=4+(n-1) 100 C. an=100+(n1)21a_{n}=100+(n-1) 21 D. an=21+(n1)4a_{n}=21+(n-1) 4

Studdy Solution
Substitute the values of a1a1 and dd into the explicit formula for an arithmetic sequence.
an=100+(n1)4a_n =100 + (n-1)4This is the explicit formula that models the situation. The correct answer is option A. an=100+(n1)4a_{n}=100+(n-1)4.

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