Find the first nn for which the arithmetic sequence with a1=50a_1 = 50 and d=−7d = -7 becomes nonpositive (an≤0)\left(a_{n}\le0\right).

15. Sequences, Series, and the Binomial Theorem

15. Sequences, Series, and the Binomial Theorem / Arithmetic Sequences / Problem 6

Problem 6

Find the first $n$ for which the arithmetic sequence with $a sub 1 equals 50$ and $d = - 7$ becomes nonpositive $open paren a sub n is less than or equal to 0 close paren$ .

$8$

$6$

$9$

$10$