If the temperature of water at 30∘C is raised by 1∘C, the water will expand. At approximately what initial temperature T will water expand by twice as much when raised by 1∘C?

I think the best answer to your question where as the water 30 degree Celsius and raised by 1 degree celsius, the water will expand. Well to know its initiall temperature, the waters initial after it expands is 30 degree celsius. I hope you are satisfied with my answer