50 - 9.20 = 40.80 so 40.80/ 4.25 = 9.6 but you can’t buy .6 of a snack so it’s 9
Answer:
216
Step-by-step explanation:
I'm sure there is a simpler way to do this but this is how I did it.
First divide 18 by 6 because it triples every 6 hours.
18/6=3
This means it will triple three times
Then triple the value three times
#1. 8x3=24
#2. 24x3=72
#3. 72x3=216
In 18 hours the virus will infect 216 people.
ANSWER
A. No because f(c)=-30
EXPLANATION
The given polynomial is
![f(x) =2x^3-9x^2+13x-6](https://tex.z-dn.net/?f=f%28x%29%20%3D2x%5E3-9x%5E2%2B13x-6)
If x+1 is a factor , then f(-1) must evaluate to zero.
![f( - 1) =2( - 1)^3-9( - 1)^2+13( - 1)-6](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D2%28%20-%201%29%5E3-9%28%20-%201%29%5E2%2B13%28%20-%201%29-6)
![f( - 1) =2( - 1)-9( 1)+13( - 1)-6](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D2%28%20-%201%29-9%28%201%29%2B13%28%20-%201%29-6)
![f( - 1) = - 2-9 - 13-6](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%20-%202-9%20-%2013-6)
![f( - 1) = -11 - 19](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%20-11%20-%2019)
![f( - 1) = - 30](https://tex.z-dn.net/?f=f%28%20-%201%29%20%3D%20-%2030)
Since f(-1) is not equal to zero, x+1 is not a factor of
![f(x) =2x^3-9x^2+13x-6](https://tex.z-dn.net/?f=f%28x%29%20%3D2x%5E3-9x%5E2%2B13x-6)