Question

Use the explicit formula an = a1 + (n – 1) • d to find the 250th term of the sequence below.

Answer 1

For this case we have the following equation:
 an = a1 + (n - 1) • d
 Where,
 a1 = 57
 d = 66-57 = 9
 For the term number 250 we have:
 n = 250
 Substituting the values:
 a250 = 57 + (250 - 1) * 9
 a250 = 2298
 Answer:
 D.2298