The given expression is:

There are 3 terms in this expressions:
1)

2)

3) 2
The coefficient of

is 3.
The coefficient of

is -7.
The constant term is 2.
No I don’t think I can lift it, nor anybody in the whole world
I believe the answer is 47.
Using the given information, the value of Σfd is 800
<h3>Calculating mean using Assumed mean </h3>
From the question, we are to determine the value of Σfd
The formula for mean, using the assumed mean method is given by

Where
is the mean
A is the assumed mean
From the given information,



Putting the parameters into the equation, we get





Hence, the value of Σfd is 800
Learn more on Mean here: brainly.com/question/20118982
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