HELP HELP HELP What is the explicit rule for the arithmetic sequence?

20.5, 18, 15.5, 13, 10.5, ...

an=23+2.5n

an=20.5−2.5n

an=20.5+2.5n

an=23−2.5n

Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?

What is the difference between the equations of a vertical and a horizontal line?

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?