Answer: 295
Step-by-step explanation: a 18 = 6 + 289 a18 = 295
An arithmetic sequence formula:
aₙ = a₁ + (n - 1) · r
We know that:
a₁ = 6
r = 17
So the formula of our sequence is:
aₙ = 6 + (n - 1) · 17
Now we can find the 18th term:
a₁₈ = 6 + (18 - 1) · 17
a₁₈ = 6 + 17 · 17
a₁₈ = 6 + 289
a₁₈ = 295
