If a1=5 and an= 2a-1+ 5 find the value of a4

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

where are the choices?

nope.   happens to me as well.

-aparri

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.