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​

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.