The city of Port St.Lucie is considered the second fastest growing city in Florida. In June of 2002, it had a reported population of 9.7x10^4 people. By, June of 2004 the city's population had reached 1.18x10^5 people. How much did Port St.Lucie's population increase, in thousands, from June 2002 to 2004 ?

Question

rushwr · Answer

$$1.8 * 10^{5}= 18 * 10^{4}$$ So now subtract 9.7 * 10^4 from 18 * 10^4

rushwr · Answer

$$18*10^{4} - 9.7 * 10^{4} = 8.3 * 10^{4}$$

rushwr · Answer

So now write it in thousands !

anonymous · Answer

I thought it was $$9.7x10^4 - 18x10^5$$

rushwr · Answer

oh no that's not it ! As we can see in the question there's an increment in the population isn't it ? So we have to subtract the smaller value from the big value ! So when they ask you to find the increment they are asking you to find the difference  between the population in 2002 and 2004 !

anonymous · Answer

Ohhh I get it now THANK YOU sooo much !!!!!!!

rushwr · Answer

No problem ! As long as you get it !

anonymous · Answer

So, the population increase would be 8,300 ?

rushwr · Answer

8.3 * 10^4 = 83 000

rushwr · Answer

You have to move 4 decimals to the right ! Isn't it ?

rushwr · Answer

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