Friday

September 19, 2014

September 19, 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.

**Answer this Question**

**Related Questions**

math - a company makes and sells sailboats. The company's cost function in ...

calculus - A function f(x) is said to have a removable discontinuity at x=a if: ...

biology - Given the part of the molecule shown below, can the underlined atom ...

Business Calculus - A company has operating costs of $2000 per thousand items ...

calculus - For what values of a and b that make the function f continuous ...

AP CHEMISTRY - A voltaic cell is constructed that uses the following half-cell ...

AP CHEMISTRY - A voltaic cell is constructed that uses the following half-cell ...

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

word problem - A company makes and sells notebook computers. The company’s cost ...

Grade 12 Calculus - Evaluate each of the following. Show all your calculations...