The perimeter of a triangle below is 4x+3y. find the measure of the missing side. (one side is x-y, the other is x+y)

Someone answer this check out the image!

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes

W-16=-12 solve each one step equation plz