Question

Which of the following is an arithmetic sequence?

A. 0-2, 4, -6,8,...
B. -8.-6.-4.-2....
C. 2,4, 8, 16, ...

Answer 1

`-8~~,~~\stackrel{-8+2}{-6}~~,~~\stackrel{-6+2}{-4}~~,~~\stackrel{-4+2}{-2}\qquad \begin{cases} a_1=-8\\ d = +2 \end{cases}`