Question

Find the 25th term of the arithmetic sequence when a1 = -14 and d = -5

Answer 1

Answer:

  a25 = -134

Step-by-step explanation:

For first term a1 and common difference d, the formula for the n-th term is ...

  an = a1 + d(n -1)

You want to evaluate this for n=25, a1=-14, d=-5. Filling in the numbers and doing the arithmetic, you get ...

  a25 = -14 -5(25 -1) = -14 -120

  a25 = -134