Which part of the proof does the fourth statement and reason represent?
1 answer:
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Answer:
Step-by-step explanation:
Given that Young millennials, adults aged 18 to 34, are viewed as the future of the restaurant industry. During 2011, this group consumed a mean of 192 restaurant meals per person (NPD Group website, November 7, 2012).
It is claimed that due to poor economy this average might have been subjected to a change.
To test this claim we have to conduct a hypothesis test.
The hypotheses would be with null there is no change against alternate that there is differnce.
(Two tailed test)
Answer:
The correct answer is 10 for lowest average cost and the cost function is 0.2 + 75x + 20.
Step-by-step explanation:
Average cost function is given by = = C(x) = 0.2x +
+75.
For minimizing we need to find C(x) = 0.
⇒ C(x) = 0.2 -
.
⇒ = 0.2
⇒ = 100.
⇒ x = ±10
⇒ x = 10 ; cost cannot be negative.
Second order derivative is positive which implies the average cost minimizes.
Original cost function is given by C(x) × x = 0.2 + 75x + 20.