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Nookie1986 [14]
2 years ago
7

I need the answer fast!! Thanks

Mathematics
1 answer:
wariber [46]2 years ago
6 0
The answer is Option 2
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The population of a city is growing at an average rate of 3% per year in 1990 the population was 45 000.
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This is an exponential growth/decay problem...

F=Ir^t, F=final value, I=initial value, r=rate, t=time, in this case:

F=I(1.03)^t  and they just want to know when F=2I so

2=1.03^t  take natural log of both sides...

ln2=t*ln1.03

t=ln2/(ln1.03)

t≈23.45

So it will take approximately 23.45 years for the population to double..

1990+23.45=2013.45

So during the year of 2013 the population will have double from its 1990 level.
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3 years ago
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Step-by-step explanation:

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2 years ago
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PLEASE HELP A pizza parlor sells 320 pizzas per night when they charge $9.00 per pizza. The owner believes increasing the price
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