It can be possible for sure if you decide to put in the work. If you have so much free time due to not having an offline job, you can dedicate most of your time in paid to post sites. You could also add article writing so as to earn better.Reaching $30 a week is quite high and very demanding on paid to post sites, but it is not totally impossible as it can be done, but I recommend you do not take ptc site as your main source of income