Find a Formula for the N Th Term of the Arithmetic

question 91

Multiple Choice

Find a formula for the n th term of the arithmetic sequence. $a _ { 1 } = 11 , d = 4$

• A) \(\alpha _ { n } = 4 n + 11\)
• B) \(a _ { n } = 4 n + 15\)
• C) \(a _ { n } = 4 n + 7\)
• D) \(a _ { n } = \frac { n } { 2 } ( 11 + 4 n )\)
• E) \(a _ { n } = \frac { n } { 2 } ( 11 + 4 ( n - 1 ) )\)

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