An increase of speed of 4 km/h on a journey of 32 km reduces the time taken by 4 hours. Find the original speed.

Hi! mark me brainliest if i : )y = 0.213x – 352.0    represents this linear model shown in the data table.plug in the values of x into the equation for a double check.let's try 1980.y = 0.213(1980) – 352.0y = 69.74which is closest to the 70.1 whereas other options do not satisfy the condition. 

Aand b are correctly balanced reactions. they have the same number of atoms in both sides of the reaction