8n² + 4n - 16 = -n²
8n² + n² + 4n - 16 = -n² + n²
9n² + 4n - 16 = 0
n = <u>-4 +/- √(4² - 4(9)(-16))</u>
2(9)
n = <u>-4 +/- √(16 + 576)</u>
18
n = <u>-4 +/- √(592)
</u> 18
n = <u>-4 +/- 24.33</u>
18
n = -<u>4 + 24.33</u> n = <u>-4 - 24.33</u>
18 18
n = <u>20.33</u> n = <u>-28.33</u>
18 18
n = 1.1294 n = -1.57389
<u />
Yep! Just add the three classes together to get your answer, C.
Exponential decay formula is Total = starting value x (1- percentage)^ time
Total = 2000(1- 0.0375)^11
Total = 2000(0.9625)^11
Total = 1313.524 km
Rounded to nearest km = 1314 km
Answer:
25
Step-by-step explanation:
Sqrt 25 = 5
5^2 = 25
