Thursday

April 17, 2014

April 17, 2014

Posted by **laura** on Friday, April 13, 2012 at 9:45am.

- precal -
**Henry**, Saturday, April 14, 2012 at 10:36amP(x) = 10x - x^2 - 1 = 15.

-x^2 + 10x - 1 - 15 = 0.

-x^2 + 10x - 16 = 0.

Solve using Quadratic Formula and get:

X = 2 = 200 Phones.

X = 8 = 800 Phnes.

**Related Questions**

algebra - A company's profit on phone sales is modeled by the function P(x)= -x^...

math - A market research company surveyed 2500 teenage cell phone owners. The ...

Algebra - A theater company's annual profit is modeled by the equation P= 0.2x^2...

Statistics - Professor does not teach from a book so am not sure how to apply ...

Statistics - I have a take home test I am working on. Any help would be ...

Algebra - Another question: A cell phone company charges $60 for a cell phone ...

English - I need to interview a group of American 16-year-old-students who are ...

College Algebra - Can you please help me solve this word problem? Your boss has ...

Price Discrimination - Why does phone company offer different pricing structures...

math - the profit (p), in dollars, for a company is modeled by the function p(x...