The fraction 4/6 could represent the green
We have that the total length of paper needed to cover all the tables is

From the question we are told that:
Number of tables 
Length of table
Extension 
Generally, the equation for the Total length tables is mathematically given by


Therefore with an extension of 0.25ft at both end we have the Total length of tablecloths to be


In conclusion
The total length of paper needed to cover all the tables is

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Ceb i think but im not exactly or totally sure
Answer:
An expression doesn't have an defiant answer. While an equation does.
Yes, you can copy and paste saying its your own words.
Hope this helps! <3