Question

Given the first term and the common difference of an arithmetic sequence find the explicit formula.

a1 = 28, d = 10

Answer 1

an = 28 +10(n -1)

Explanation:

The general form of the explicit formula for an arithmetic sequence is ...

an = a1 +d(n -1)

Using the given values, we find your explicit formula to be ...

an = 28 +10(n -1)