Sustainable developement prreserve natural means and resoures for futures generation .

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?