1+(21/100) = 1.21
15049 * 1.21 = 18209.29 (rounded to 18209)
The population was 18209
Hope this helps! :)
we have

Complete the square. Remember to balance the equation by adding the same constants to each side



Rewrite as perfect squares

Square Root both sides



substitute

therefore
<u>the answer is</u>
the solutions are
or 
or 
I depends if it is asking for miles to hours or hours to miles but, doing i would do hours to miles so it would be 270:6 which simplifies to 45:1