The car runs from Nanjing to Shanghai 274 km away, with an average speed of 80 km an hour Find the functional relationship between the distance s (km) and the travel time t (H) of the car from Shanghai, write out the value range of the independent variable, and draw the image of the function

The car runs from Nanjing to Shanghai 274 km away, with an average speed of 80 km an hour Find the functional relationship between the distance s (km) and the travel time t (H) of the car from Shanghai, write out the value range of the independent variable, and draw the image of the function


S=274-80t
The value range of T is 0



Which objects are 1 km 1 m 1 decimeter 1 cm 1 mm long


One kilometer road, one meter ruler, one decimeter pen, one centimeter finger clip, one millimeter nail thickness