Find the second derivative of the function

f(x)=(x+1)/(x-1)

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

The equation ip| = 2 represents the total number of points that can be earned or lost during one turn of a game. which best describes how many points can be earned or lost during one turn?