SOLUTION: The Township of Brock is growing at a rate of 6.5% per annum. How many people are there in Brock township now, if there will be 15000 in 4.5 years?

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Question 1114035: The Township of Brock is growing at a rate of 6.5% per annum. How many people are there in Brock township now, if there will be 15000 in 4.5 years?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
y=p%2A1.065%5Ex

p%2A1.065%5E4.5=15000

p=15000%2F1.065%5E4.5

p=11300-------to three significant figures