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Write an equation for the nth term of the arithmetic sequence 12, 14, 16, 18, ...?

1 Answer

Vinícius Ferraz

Jun 19, 2018

#a_n = 10 + 2n = 2(n + 5)#

Explanation:

#Delta = 14 - 12 = 2#

#a_1 = 12#

#a_n = a_1 + Delta * (n - 1)#

#a_n = 12 + 2 * (n - 1)#

#2*6, 2*7, 2*8, 2*9, cdots#

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