If all angles are measured in degrees, the ratio of three times the measure of $\angle a$ to four times the measure of the complement of $\angle a$ to half the measure of the supplement of $\angle a$ is $3: 14: 4$. what is the number of degrees in the measure of the complement of $\angle a$?

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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.