Question

The explicit formula for the nth term of an arithmetic sequence is an = a1 + (n - 1) • d. What is the simple formula corresponding to the explicit formula if the first term of the sequence is -10 and the difference between terms in the sequence is 4?

Answer 1

= -10 + (n - 1)*4
= -10 + 4n - 4
= 4n - 14