How can I reactivate my subscription so I can get tutor, I canceled by accident when trying to upgrade , do I have to pay 24$? Again?

Define production possibility curve

This description of the "firm league of friendship" of states is a quotation from the

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?