Using sigma notation, describe the total length of 7 pictures hung side-by-side. Then find the total length the pictures occupy along the wall if the first picture has a length of 10 inches and the length of each successive picture is 4 inches longer than the previous one.

Question

anonymous · Answer

$$\sum_{i = 1}^{7} 10 + 4(i - 1)$$

anonymous · Answer

ok so the 7 is the upper index and one is the lower index so then i would just create a table and plug in the numbers 1 through 7 to get the terms, then i would add them to get the total length correct?

anonymous · Answer

ya

anonymous · Answer

OK THANK YOU!!