## College Algebra (6th Edition)

Formula for $a_{n}$ term of the given sequence = $a_{1}$ + (n - 1) d. Where $a_{1}$ = The first term d = Common difference n = $n^{th}$ number of term Given $a_{1}$, the first term = 6 Common difference (d) = 3 $20^{th}$ term of sequence = 63
Formula for $a_{n}$ term of the given sequence = $a_{1}$ + (n - 1) d. Where $a_{1}$ = The first term d = Common difference n = $n^{th}$ number of term Given $a_{1}$, the first term = 6 Common difference (d) = 3 $20^{th}$ term of sequence = 6 + (20 - 1) $\times$ 3 = 6 + 19$\times$3 = 6 + 57 = 63