The first thing you would do is substitute the 10 in for 'w' and 535 in for 'c'. 535 = 235 + 30(10) 535 = 185 + 35(10) Then, you would just solve the equations. 535 = 235 + 30(10) 30(10) = 300 300 + 235 = 535 So the first equation is true, and we know for a fact that Larry's Landscaping charges $535 for a spring cleaning and weekly yard maintenance for 10 weeks. On to the next equation. 535 = 185 + 35(10) 35(10) = 350 185 + 350 = 535 So, the second equation is true also. And we also know for a fact that Joe's Landscaping charges $535 for a spring cleaning and weekly yard maintenance for 10 weeks. So, now that we know that they will end up charging the same amount of money for a spring cleaning and weekly yard maintenance, the only answer that fits that is C. The cost for lawn maintenance is the same, $535, for both landscaping companies after 10 weeks. Hope this helps!
