Question

Interpolando sete meios aritméticos entre -2 e 22 temos : * 1 ponto ( -2, 0, 2, 4, 6, 8, 12,16,20) ( -2, 1, 4, 7, 10, 13, 16, 19, 22) ( 1, 4, 7, 10, 13, 16, 19, 22, 24) ( -2, - 1, 4, 7, 10, 13, 16, 19, 22)

Answer 1

$\large\boxed{\begin{array}{l}\sf(-2, , , , , , , 22)\\\sf a_9=a_1+8r\\\sf22=-2+8r\\\sf 8r=24\\\sf r=\dfrac{24}{8}\\\sf r=3\\\sf(-2,1,4,7,10,13,16,19,22)\\\huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~B}}}}[/\end{array}}$