Which of the following is an arithmetic sequence?

{1,3,6,10,15,…}
{−6,1,8,15,22,…}
{1,2,4,8,16,…}
{64,32,16,8,4,…}

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

Polygon abcd is a rectangle what is the area