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**polynomial**

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**V024****Guest**

The manager of a retail store has figured othat he rmonthly profit P (in thousands of $$) is determined by her monthly advertising expenses x(in tens of thousands of dollars) according to the formula P=x^3-20x^2+100x for 0<(or equal to) 0 <(or equal to) 4. For what value of x does she get 147,000 in profit?

**George,Y****Member**- Registered: 2006-03-12
- Posts: 1,316

http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=equations&s2=solve&s3=basic

**X'(y-Xβ)=0**

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**George,Y****Member**- Registered: 2006-03-12
- Posts: 1,316

above is the link of an online free math solver

**X'(y-Xβ)=0**

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**V024****Guest**

Thank you!

**George,Y****Member**- Registered: 2006-03-12
- Posts: 1,316

Glad to help

**X'(y-Xβ)=0**

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