The plant manager may purchase a piece of unusual machinery for $10,000. its resale value after 1 year is estimated to be $3000. because the device is sought by antique collectors, resale value is rising $500 per year. the maintenance cost is $300 per year for each of the first 3 years, and then it is expected to double each year. thus the fourth-year maintenance will be $600; the fifth-year maintenance, $1200, and so on. based on a 15% before-tax marr, what life of this machinery has the lowest euac?

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.

answerindustrial revolution;

answerboth the short run phillips curve and the aggregate demand and aggregate supply model