4. the interest is computed on the principal and also on the accumulated past interests. a. simple annuity b. compound annuity C. simple interest d. compound interest​

d. compound interest​

Explanation:

Compound interest basically means that previously earned interests will earn interests on their own. For example, you invest $100 and receive a 5% yield. At the end of year 1 you will have $105. At the end of year 2 you will have $105 x 1.05 = $110.25. The $5 in interests previously earned during year 1 will earn $0.25 interest during year 2.

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.