A race car at the Sonoma county raceway in California zips around the track. It travels the first 80 kilometers take 0.4 hour. Calculate the race car's average speed.

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.