Question
a grocery store has a display of cans stacked in layers. The top layer has 1 can. Every other layer has 4 more cans than the layer above it. If there are 12 layers, use the formula for the sum of a finite series to find the number of cans in the display. showing your work is appreciated.
Answers
oobleck
a = 1
d = 4
Sn = n/2 (2+4(n-1))
d = 4
Sn = n/2 (2+4(n-1))