Question

a expressão do termo geral da sequencia abaixo é: 8,11,14,17,20

Answer 1

$\Large\boxed{\begin{array}{l}\sf a_n=a_1+(n-1)\cdot r\\\sf r=11-8=3\\\sf a_n=8+(n-1)\cdot3\\\sf a_n=8+3n-3\\\Huge\boxed{\boxed{\boxed{\boxed{\sf a_n=3n+5}}}}\end{array}}$