Find a Formula for A_n for the Arithmetic Sequence $\frac { 23 } { 4 }$

question 149

Multiple Choice

Find a formula for a_n for the arithmetic sequence.
A₁ = -5, a₅ = 18

• A)a_n = \(\frac { 23 } { 4 }\) n - \(\frac { 43 } { 4 }\)
• B)a_n = \(\frac { 23 } { 4 }\) n + 43
• C)a_n = \(\frac { 43 } { 4 }\) - 43n
• D)a_n = \(\frac { 43 } { 4 }\) + 43n
• E)a_n = \(\frac { 23 } { 4 }\) n + \(\frac { 43 } { 4 }\)

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