Homework Help: Algebra 2

Posted by someone on Monday, May 30, 2011 at 6:02pm.

the demand for a new video game is given by the function p(x)= -x^2 + 5x +75. Correspondingly, the supply function for the same game is given by p(x) = 7x-9, where p represents the price per video in dollars and x represents the number of video games sold in thousands of games. Determine the equilibrium price (where demand equal supply) and the number of video games sold to achieve equilibrium. Solve graphically and algebraically. Use a scale where each box represents 10 units on the y-axis, 1 unit on the x-axis.

Algebra 2 - Damon, Monday, May 30, 2011 at 6:08pm
7x-9 = -x^2+5x+75

x^2 + 2 x - 84 = 0

x = [-2 +/- sqrt(4+336) ] /2
= -1 +/- 9.22
= 8.22
Algebra 2 - Anonymous, Tuesday, May 31, 2011 at 6:28pm
I'm guessing you go to John Jay...

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