Whats the unit rate 140 mi in 3.5 h

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?

Write and solve a real word problem that involves determining distance on a coordinate plane

Which of the following is the shape of a cross section of the figure shown below