A customer at a copy shop has $6.00 remaining on a prepaid card. Black-and-white copies cost $0.12 each, and color copies cost $0.20 each. The equation [math]12x + 20y = 600[/math] models this situation, where [math]x[/math] is the number of black-and-white copies and [math]y[/math] is the number of color copies the customer can make by using the card. What is the maximum number of color copies the customer can make?
[list=1] [*]Convert the equation into slope-intercept form. [*]Find the values of [math]m[/math] and [math]b[/math]. [*]Determine the [math]y[/math]-intercept of the line represented by the equation. [*]Determine the maximum number of color copies the customer can make. [/list] This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on their resources.