Answer: F(x) = 5x^2 + 10x
Answer:
c
Step-by-step explanation:
sorry if wrong
![x= \pi](https://tex.z-dn.net/?f=x%3D%20%5Cpi)
Step-by-step explanation:
![\cos^2x+\cos x+1=0](https://tex.z-dn.net/?f=%5Ccos%5E2x%2B%5Ccos%20x%2B1%3D0)
Let ![u= \cos x](https://tex.z-dn.net/?f=u%3D%20%5Ccos%20x)
Then ![u^2+2u+1=(u+1)^2=0](https://tex.z-dn.net/?f=u%5E2%2B2u%2B1%3D%28u%2B1%29%5E2%3D0)
or
![\cos x = -1](https://tex.z-dn.net/?f=%5Ccos%20x%20%3D%20-1)
This gives us
or all integer multiples of ![\pi (n \pi)](https://tex.z-dn.net/?f=%5Cpi%20%28n%20%5Cpi%29)
Answer:
0.8
Step-by-step explanation:
To calculate the cost of any item per pound, divide the cost of the item by its weight in pounds: cost ÷ pounds = cost per pound.
Hope This Helped!!