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Write an expression for the nth term of the sequence, 6, -2, -10, -18….








 


A) 8n - 14








B) -8n + 14








C) n2 + 5








D)8 - 14n







 Dec 1, 2014

Best Answer 

 #1
avatar+26400 
+5

Write an expression for the nth term of the sequence, 6, -2, -10, -18….

$$\boxed{a_n=a_1+(n-1)*d}\\\\
a_1=6 \small{\text{ and }} d=-8 \\\\
a_n = 6 + (n-1)*(-8) \\
a_n = 6 -8n +(-1)*(-8) \\
a_n = 6 -8n + 8 \\
a_n = 14 - 8n\\
\boxed{a_n = -8n + 14 }$$

So $$\textcolor[rgb]{1,0,0}{B)}$$ is correct.

 Dec 2, 2014
 #1
avatar+26400 
+5
Best Answer

Write an expression for the nth term of the sequence, 6, -2, -10, -18….

$$\boxed{a_n=a_1+(n-1)*d}\\\\
a_1=6 \small{\text{ and }} d=-8 \\\\
a_n = 6 + (n-1)*(-8) \\
a_n = 6 -8n +(-1)*(-8) \\
a_n = 6 -8n + 8 \\
a_n = 14 - 8n\\
\boxed{a_n = -8n + 14 }$$

So $$\textcolor[rgb]{1,0,0}{B)}$$ is correct.

heureka Dec 2, 2014

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