Taking back some points there lol , but actually the answer is n=2/3
Answer: 
Step-by-step explanation:
Given
The unit cost is given by

find the derivative of the unit cost and equate it to zero to obtain the minimum value

Substitute 140 for
in the cost function, we get
![C(140)=0.6[140]^2-168(140)+30,389\\C(140)=11,760-23,520+30,389\\C(140)=\$18,629](https://tex.z-dn.net/?f=C%28140%29%3D0.6%5B140%5D%5E2-168%28140%29%2B30%2C389%5C%5CC%28140%29%3D11%2C760-23%2C520%2B30%2C389%5C%5CC%28140%29%3D%5C%2418%2C629)
Answer:
18,(18)%
Step-by-step explanation:
420 + 160 + 300 = 880 total trees
160 / 880 * 100% = 18,(18)%
Answer:
c because is right
Step-by-step explanation:
1 6/5 beacause it equals more than 1 5/8