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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Answer:
D
Step-by-step explanation:
It shows 2x + 1 on the top and x + 2 on the left
Answer:
y = 8x + 7
Explanation:
The equation of the line in slope-intercept form has the following general formula:
y = mx + c
where:
m is the slope of the line = 8
c is the y-intercept = 7
Substitute with the givens in the above formula to get the slope of the line as follows:
y = mx + c
y = 8x + 7
Hope this helps :)