4x - 9x + 3 = -32
A: -7
B: -35/13
C: -29/5
D: 7

D.) x = 7

Step-by-step explanation:

4x - 9x + 3 = -32

The first thing we do is combine like terms which means to add or subtract or multiply or divide any numbers that are known. Here in this equation we have 4x and - 9x

4x - 9x + 3 = -32

- 5x + 3 = - 32

Now what we do is subtract the common numeral from the side where the x value is.

- 5x + 3 = - 32

- 3. - 3

- 5x = - 35

Lastly, we divide here we take the value next to x and divide both numbers, here we will divide by - 5.

- 5x = - 35

- 5x / - 5 = x

- 35 / - 5 = 7

Now we take are two solutions and create are final solution.

x = 7

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step-by-step explanation:

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.