A new plumber has just started his own business. In order to try and gain customers, he is running a special for his services. He charges $16 per hour, plus a standard house call fee of $25. Determine the slope of the line that passes through the points of the total cost for jobs lasting from 2 hours to 6 hours. Explain what the slope means in the context of the problem. Finally, use the slope to determine how many hours of work a customer could get for $150. Assume there is no sales tax.
[list=1] [*]Create a table to show how the two quantities described vary. [*]Graph the relationship. [*]Determine the slope and what it means in the context of the problem. [*]How can the slope be used to determine how many hours of work a customer could get for $150? [/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.