7. A local grocery store stacks the soup cans in such a way that each row has 2 fewer cans than
the row below it. If there are 32 cans on the bottom row, how many total cans are on the bottom 14 rows?

Question

7.	A local grocery store stacks the soup cans in such a way that each row has 2 fewer cans than 
the row below it. If there are 32 cans on the bottom row, how many total cans are on the bottom 14 rows?

anonymous · Answer

To find the answer you know there are 32 cans at the bottom so and there are 14 rows so you (32)+(32-2)+(30-2).... etc and you get 270. If you know any calculus you could also find an expression and then integrate it to find the amount of cans at 14 rows.