Answer:
The question is not complete has some details are missing. I have however attached a similar question for the differential equation, you can use the same approach for any DE.
Explanation:
Solution of differential equation was aplied to get the particular solution, the details and appropriate steps is as shown in the attachment.
Answer:
An observational study of an association between two variables.
Explanation:
In the given scenario, it is an observational study of an association between two variables. The variables being :
- Explanatory variable (independant variable / predictor variable) may explain or influence changes in a response variable.
- Response variable (dependant variable) measures an outcome of a study.
Observational study observes individuals and records variables but doesn't attempt to influence the response (does not impose a treatment). It allows the researcher to directly observed the behavior of inteest rather than rely on the subject's self-descriptions (Survey) thus allowing the researcher to study the subject in its natural environment, thus removing the potentiallybased effect of the unnatural laboratory setting on the subject's performance.
There once lived a single - celled ancestor that gave rise to two lines of evolution --- one leading to the living choanoflagellates and the other to animals .