a truck costs 20000 it depreciates 4000 per year write a linear model in the form vt=mt+b where x represents the current value of the truck after t years of ownership​

There are 1872 steps in a building that has 104 floors. each floor has the same number of steps. a second building has the same number of floors but 2 fewer steps between each floor. how many steps are there between each floor of the second building?