Question

Find the 18th term of the sequence
a19 = -7, d= - 17

Answer 1

a₁₈ = 10

Explanation:

aₙ₊₁ = aₙ + d

a₁₉ = a₁₈ + d

- 7 = a₁₈ + (-17)

a₁₈ = - 7 +17

a₁₈ = 10