started the year with total assets of $30,000 and total owner's equity of $20,000. During the year a) assets increased by $20,000, b) the business recorded $45,000 in revenues, c) the business recorded $30,000 in expenses, and d) the owner withdrew $5,000 for personal use. Liabilities at the end of the year were:

$20,000

Explanation:

The computation of the liabilities at the end of the year is shown below:

As we know that

Total assets = Total liabilities + equity

where,

Total assets are

= Begining balance + increased assets

= $30,000 + $20,000

= $50,000

And, the equity is

= Starting balance + revenues - expenses - withdrawn amount

= $20,000 + $45,000 - $30,000 - $5,000

= $30,000

So, the liabilities is

= $50,000 - $30,000

= $20,000

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.