Find the indicated quantity.
-$a _ { 1 }$, when $d = - 3$ and $a _ { 36 } = - 93$
A) $- 3$
B) 9
C) 6
D) 12

Name: Find the indicated quantity. -$a _ { 1 }$, when $d = - 3$ and $a _ { 36 } = - 93$ A) $- 3$ B) 9 C) 6 D) 12
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Question

Quizplus · Accepted Answer

The formula for the nth term of an arithmetic sequence is $a_n = a_1 + (n - 1)d$. Substituting $a_{36} = -93$, $d = -3$, and $n = 36$, we get $-93 = a_1 + (36 - 1)(-3)$. Solving for $a_1$, we find $a_1 = 12$.

Find the Indicated Quantity a1a _ { 1 }a1​ , When d=−3d = - 3d=−3

Find the Indicated Quantity $a _ { 1 }$ , When $d = - 3$