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# Time In an exercise earlier in this chapter, we saw that the time (in hours) that a branch of Amalgamated Entities needs to spend to meet the quota set by the main office can be approximated by$$T(x, y)=x^{4}+16 y^{4}-32 x y+40$$where $x$ represents how many thousands of dollars the factory spends on quality control and $y$ represents how many thousands of dollars they spend on consulting. Find the average time if the amount spent on quality control varies from $\$ 0$to$\$4000$ and the amount spent on consulting varies from $\$ 0$to$\$2000$ . (Hint: Refer to Exercises $61-64 . )$

## 627.2 hours

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calculating the total average. The average amount. Oh, reps in me, um, the amount of time it takes based on the amount my produced from eggs representing the class is ours. The factory spent some quality control And why? Which represents thousands of dollars consulting. So the function will be, uh, function would look like immigration from zero teal immigration from this year for 16 wide to the fore. My very x y foreign the x 54 e 64 July to the fourth. My eyes to six. Why? Which ankle things before Why plus news. May 1 28. Why squared corn from security Teoh kids.

New Jersey Institute of Technology

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