Question 1148897
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The three problems are similar; if you can get the right answer for the last one, you must know the calculations that are needed.  So you should be getting the right answers for the first two.<br>
Town C....
The growth factor is 3 over 11 years:
{{{x^11 = 3}}}
{{{x = 3^(1/11) = 1.10503}}} to 5 decimal places
The growth factor for 1 year is 1.10503; that represents an increase of 10.503% per  year. (your correct answer)<br>
The calculations for the other cases are the same, with different numbers.<br>
Town A....
The population increases by 30% in 7 years; that means a growth factor of 1+.30 = 1.30.  So
{{{x^7 = 1.3}}}
and continue from there as before.<br>
Town B....
The population decreases by 38% in 15 years; that means a "growth" factor of 1-.38 = 0.62.  So
{{{x^15 = 0.62}}}
and again finish as with the other two cities.<br>