Ineed to understand how to find the value for 3x-2.it is my algebra 2 homework and i don't understand it

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

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.

Is the point (0, 8) on the x-axis or y-axis? how do you know?