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	Math Help Forum > Pre-University Math Help > Pre-Algebra and Algebra Equation of a Line User Name Save? Password Register Forum Rules FAQ Donate Members List Arcade Download MHF Flyer Search Today's Posts Mark Forums Read   Thread Tools Display Modes   #1   October 7th, 2008, 05:10 PM redkitten311 Newbie   Join Date: Oct 2008 Posts: 1 Country: Thanks: 0 Thanked 0 Times in 0 Posts Equation of a Line I have a word problem I can't solve. Please help? A Plumber charged $110 for a three-hour job and $160 for a five-hour job. At this rate, how much would he charge for an 8-hour job? Thanks in advance. Advertisement     #2   October 7th, 2008, 05:27 PM icemanfan Super Member   Join Date: Apr 2008 Posts: 720 Country: Thanks: 6 Thanked 312 Times in 307 Posts Let a be the initial cost, and b be the cost per hour. Then: a + 3b = 110 a + 5b = 160 Solve the system for a and b; your answer will be a + 8b. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Tags algebra two ii, equation of a line, homework, please help, urgent « annual contribution | Top | Substitution » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are Off Pingbacks are Off Refbacks are Off Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Pre-University Math Help     Pre-Algebra and Algebra     Geometry     Trigonometry     Pre-Calculus     Basic Statistics and Probability     Other topics University Math Help     Calculus     Analysis, Topology and Differential Geometry     Linear and Abstract Algebra     Number theory     Discrete Mathematics, Set Theory and Logic     Advanced Probability and Statistics     Advanced Applied Math     Differential Equations     Business Math     Other Advanced Topics Math Resources     LaTex Help     Mathematics Software Discussion     Calculator Discussion     Useful Math Websites     Mathematics News MHF Lounge     Chat Room         Live Chat     Problem of the Week     Pre-prints and other original work     Formal Debates         Proposals Challenges and Puzzles     Puzzles     Math Challenge Problems MHF Feedback and Announcements Forum     Question, Feedback and Comments     Announcements Our Other "Help Forums"     Physics Help Forum     Chemistry Help Forum All times are GMT -7. The time now is 12:33 AM. Contact Us - Math Help - Archive - Top Powered by vBulletin® Version 3.7.3 Copyright ©2000 - 2009, Jelsoft Enterprises Ltd. SEO by vBSEO 3.2.0 ©2008, Crawlability, Inc. ©2005 - 2009 Math Help Forum

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