SOLUTION: Each year a tree grows 5cm less than it did the presiding year. If it grew by 1m in the first year, in how many years will it have ceased growing ?

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Question 722582: Each year a tree grows 5cm less than it did the presiding year. If it grew by 1m in the first year, in how many years will it have ceased growing ?
Answer by josgarithmetic(39614) About Me  (Show Source):
You can put this solution on YOUR website!
YEAR_________________________GROWTH, meters
1____________________________1.00
2____________________________1.00-0.05
3____________________________1.00-0.05-0.05
.
.
n____________________________1.00-%28n-1%29%2A0.05

The question requires finding what is n when the n-th expression equals zero.
highlight%281.00-%28n-1%29%2A0.05=0%29, solve for n.