5100 Nikon camera and yellow pictures?

I just bought a Nikon camera and I'm having a little trouble with it. Whenever I take a picture, the picture comes out with a yellow tint to it. I need for the picture to be white.
The object is on a white background with florescent lighting. Is there a certain switch or setting that I need to change or what? Why do I have a yellow tint to all my pictures? I need to get these pictures off to a client so I need help As soon as possible!

I guess you missed the section about white balance in the manual that came with your camera when you took the time to carefully read it.

You did read the manual right?

It is the White Balance that cause the problem.

Go into the menu and looks for White Balance, set it at Florescent Lighting.

The camera is being fool by the white background.