Help please!!! Mainly questions 13-20 but 1-12 would be nice to check! For the e

Question

Help please!!! Mainly questions 13-20 but 1-12 would be nice to check!

For the equation For the equation x3/2 + y3/2 = 9, find the value of dy/dx at the point(4,1) Using the cost function C = 190,000 + 0.75x and the revenue function R = 180x = 0.125x2, find the rate at which the profit is changing when the production is 200 units and the rate of change of production is 150 units per week. Using the weekly sales function S = 1980 + 45x + 0.65x2 with respecting the weekly advertising costs, find the rate at which the weekly sales are changing when the weekly advertising costs are $8400 and these costs are increasing at a rate of $1250/week.

Explanation / Answer

10) E

11) E

12) A

13) C

14) A

15) B

16) B

17) B

18) A

19) E

1) A

2) E

3) E

4) E

5) E

6) D

7) B

8) D

9) A

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