Answer:
a₆₆ = 1095
Explanation:
the nth term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term , d the common difference and n the term number
here a₁ - 10 and d = a₂ - a₁ = 7 - (- 10) = 7 + 10 = 17
substitute these values into the nth term formula
a₆₆ = - 10 + (65 × 17) = - 10 + 1105 = 1095