<u>Answer-</u>
<em>The estimated population in 2013 is </em><em>3081.</em>
<u>Solution-</u>
This can be represented as exponential decreasing function,

Where,
-
a = starting amount
- r = rate
- t = years
Putting the values,




As population can not be in fraction, so after rounding off the estimated population in 2013 is 3081.
Aos= -b/2a so plunin your numbers and you'll get the AOS so you can find the vertex
Answer:
7
Step-by-step explanation:
Working backwards:
19 + 9 = 28
28/ 4 = 7
Checking work:
7 x 4 = 28
28 - 9 = 19
You would have to mail it off