Question: Interstate 20 travels through what Rockdale County city in Georgia?
Context: Rockdale County High School is located in the heart of Conyers, Georgia, United States, in the old-town district.  RCHS is one of four high schools located in Rockdale County, along with Heritage High School, Salem High School, and the Rockdale Career Academy.  RCHS also hosts the Rockdale Magnet School for Science and Technology, which is sponsored by Georgia Tech. The Rockdale News is a newspaper serving Conyers, Georgia, and surrounding Rockdale County.  The newspaper publishes once per week on Saturdays. RJ Hadley (born Rakeim Jerhal Hadley on January 14, 1969) is a Democratic Party activist and current Tax Commissioner of Rockdale County, Georgia.  In 2008 he was a delegate to the Democratic National Convention representing Georgia.  He has been a member of the Rockdale County Democratic Party since 2006 and was elected to its executive board in 2010. Heritage High School is one of three public secondary schools in Rockdale County in Conyers, Georgia, United States (the others being Rockdale County High School and Salem High School).  Heritage High School is home of the Patriots.  It has twice been named a School of Excellence.  In December 2009, "U.S. News & World Report" gave Heritage High School a silver medal ranking in the top 500 high schools in the nation.  In 2014 Heritage High School became an Academy for Performing and Visual Arts. The Rockdale Citizen is a newspaper serving the community of Conyers, Georgia and Rockdale County, Georgia, USA.  The Citizen publishes five days a week, Tuesday through Friday and Sunday, serves as the legal organ for Rockdale County, and is available online.  It is a member of the Georgia Press Association. Salem High School is one of three public secondary schools in Rockdale County in Conyers, Georgia, United States.  The school educates about 1,600 students in grades 9 to 12 in the Rockdale County Public School district. In the U.S. state of Georgia, Interstate 20 (I-20) travels from the Alabama state line to the Savannah River, which is the South Carolina state line.  The highway enters the state near Tallapoosa.  It travels through the Atlanta metropolitan area and exits the state in Augusta.  The highway also travels through the cities of Bremen, Douglasville, Conyers, Covington, and Madison.  I-20 has the unsigned state highway designation of State Route 402 (SR 402). The Rockdale County School District is a public school district in Rockdale County, Georgia, United States, based in Conyers.  It serves the communities of Conyers and Lakeview Estates. Panola Mountain is a 100 acre granite monadnock near Stockbridge on the boundary between Henry County and Rockdale County, Georgia.  The peak is 946 ft above sea level, rising 260 ft above the South River.  The South River marks the boundary between Henry/Rockdale counties and DeKalb County, Georgia.  Due to its delicate ecological features, Panola Mountain was designated a National Natural Landmark in 1980. Conyers is the only city in Rockdale County, Georgia, United States.  The city is twenty-four miles east of Atlanta.  As of the 2010 census, the city population was 15,195.  The city is the county seat of Rockdale County.  The formerly separate town of Milstead is now part of Conyers.
Answer: Conyers