Answer:
a₁₅ = - 68
Step-by-step explanation:
The nth term of an arithmetic sequence is
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - 26 and d = a₂ - a₁ = - 29 - (- 26) = - 29 + 26 = - 3 , then
a₁₅ = - 26 + (14 × - 3) = - 26 - 42 = - 68
