Describe a real world scenario that is an arithmetic series. Show your work as you find the 7th term of your scenario.
HELP!!!

Question

campbell_st · Answer

a stack of cut logs the bottom row has 23 logs and each row above has one less log

|dw:1342132703514:dw|

how many logs in the 7th row

a = 23 d = 1 and n = 7
use the formula 

$$T _{n} = a + (n -1) d$$

anonymous · Answer

@campbell_st can you solve it for me please

campbell_st · Answer

oops in the information above the common difference is d = -1

$$T _{7} = 23 + (7 -1)\times (-1)$$

$$T _{7} = 23 - 6$$

I'll let you finish it

anonymous · Answer

@campbell_st so, its 17???

campbell_st · Answer

correct

anonymous · Answer

@campbell_st thanks

I was having trouble thinjking of a real world example the rest is fairly easy.

Thanks A LOT

campbell_st · Answer

hope it helps... 

things like seats in a theatre is another example...