What is the solution to this system of equations? A.
(2, 6)

B.
(3, 1)

C.
(1, 3)

D.
(6, 2)

A just sub y of first equation into second then solve for X value

A. (2, 6)

Step-by-step explanation:

Whenever a question asks for a solution and the graph is shown, the easiest way to find the solution is to see where the lines intersect. In this case, that would be at the point (2, 6).

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

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