A mining company owns two mines. These mines produce an ore that can be graded into two classes: regular grade and low grade. The company must produce at least tons of regular-grade and tons of low-grade ore per week. The first mine produces tons of regular-grade and tons of low-grade ore per hour. The second mine produces tons of regular-grade and tons of low-grade ore per hour. The operating cost of the first mine is per hour, and the operating cost of the second mine is

750 h and costs $0.60 per bulb.

government control and resources

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.