A store displays six computers on a shelf side–by–side. Find the total length of the computers on the table if the first computer was eight inches wide and the width of each successive computer is four inches longer than the previous one.
Show all your work and describe the sigma notation used in answering the question above.

Question

A store displays six computers on a shelf side–by–side. Find the total length of the computers on the table if the first computer was eight inches wide and the width of each successive computer is four inches longer than the previous one. 
Show all your work and describe the sigma notation used in answering the question above.

radar · Answer

$$\sum_{k=1}^{n=6?}4(k+1)=108"$$pretty much of wag lol

radar · Answer

Not to sure about that answer, it has been a long time since I had that, and never used it after I had it.

anonymous · Answer

x1=8
x2=12
x3=16
....

So, $$\sum_{1}^{6}4x+4$$=108 inches