My newly hooked up kitchen sink is clogged. The sink has one bowl and garbage disposal hooked to it. Just had plumber out yesterday to hook everything up and now it clogged. Plunger didn't work, so what should we do next?

You should call the plumber back and have this fixed at no charge to you under warranty. You have a clog in the drain line. If you wish to handle it yourself then remove the "J bend" from the trap and send a hand snake up into the wall.(see image). You'll run into a bend about 8 inches in but once around that you only have 6 more feel of snake to run out. Good luck and thank you for rating my answer. Tom