Y = x + 4
y = 3x + 6
set them equal..
x + 4 = 3x + 6 <==
Answer: D). This was a cross-sectional cohort study
Step-by-step explanation:
The given situation is an example of cross sectional cohort study because the investigator choose the samples from the population using cross sectional method and use the same sample source for analyzing the independent variables for specific period of time or intervals of time to assess the history of exposures and outcomes.
Here, the lung function is tested at an interval of 7 years compared with the levels of exposure to the coal ash so it is the example of cross sectional cohort study.
2/3 will not be included in the domain of g/f
Step-by-step explanation:
Given functions are:
We have to calculate (f/g)(x) first
The steps will be as follows:
Putting the values of functions
Domain of g/f:
The function will be undefined if the denominator is zero.
To find the domain we will put the denominator equal to zero
So,
Hence, the function will be undefined on x=2/3 so 2/3 will not be included in the domain of (f/g)(x)
<u>Answer:</u>
2/3 will not be included in the domain of g/f
Keywords: Domain, Operations on Functions
Learn more about functions at:
#LearnwithBrainly
Answer:
37.5
Step-by-step explanation: