anonymous
  • anonymous
last day of school plzz help Jake and Seth put some money into their money boxes every week. The amount of money (y), in dollars, in their money boxes after a certain amount of time (x), in weeks, is shown by the equations below: Jake: y = 5x + 85 Seth: y = 20x + 40 After how many weeks will Jake and Seth have the same amount of money in their money boxes and what will that amount be? 3 weeks, $100 3 weeks, $285 6 weeks, $150 100 weeks, $3
Mathematics
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SOLVED
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chestercat
  • chestercat
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johnweldon1993
  • johnweldon1993
So we want to see when their money (these equations) will be equal y = 5x + 85 y = 20x + 40 Since both will have an equal amount of money... 'y' will be equal...and if 'y' is equal then these equations are equal...so \[\large 5x + 85 = 20x + 40\] And just use algebra to solve for 'x'
anonymous
  • anonymous
thank you so much , can u help me with one more question
johnweldon1993
  • johnweldon1993
Sure :)

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