Water from the tub will drain very slowly, if at all; and the water will come out through the bottom of the toilet and onto the floor. Whenever I do dishes or wash clothes, the water from that ends up in the toilet and the tub.Toilet will overflow and tub will not drain. Please help.

That indicates you have main sewer pipe blockage. All pipes connect in one pipe under your house and continue out as a single pipe. Since so many fixtures in your house cause sewer overflow, blockage can be anyplace between your house and City Sewer inlet. Call Sewer Cleaning contractor and have him to snake your sewer line. Also, you may ask him to do video inspection to make sure you have no roots inside your sewer.

Back to you / Milo