anonymous
  • anonymous
one more question that needs checking @whpalmer4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
i am pretty sure i am right @whpalmer4 , it is very similar to the question we did the first time
anonymous
  • anonymous
the first answer is just the slope, and the second is me finding the slope y2-y1/x2-x1

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anonymous
  • anonymous
\[\frac{ 310-180 }{ 4-2 }\]
anonymous
  • anonymous
= 65
anonymous
  • anonymous
right?
whpalmer4
  • whpalmer4
The first question asks you to find the slope of the plumber's wages, right? \[y=55x+85\]is the equation for the plumber's wages. Compare with slope-intercept form: \[y = mx+b\]where \(m\) is the slope $55 is the plumber's hourly rate, and he charges $85 for showing up.
anonymous
  • anonymous
so:
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whpalmer4
  • whpalmer4
Second one can be computed the way you did, that gets the correct answer. You can also look at the table and see that the independent variable (the number of hours worked) goes from 1 to 2 as the wages go from 115 to 180, so the additional wages for 1 hour of work are 180-115 = 65. Knowing that the slope is 65, you can work out the entire formula for the electrician's wages: \[y = mx + b\]\[y = 65x + b\]but we now can plug in any data point from the table and find \(b\): \[115 = 65(1) + b]\[115 = 65 + b\]\[b = 50\] So the formula for the electrician is \[y = 65x + 50\]He charges $65/hour, and a $50 fee for showing up.
anonymous
  • anonymous
nvm it is still 65
whpalmer4
  • whpalmer4
sorry, fat fingered a bit of my formatting in that last post, but I think you can figure it out.
anonymous
  • anonymous
@whpalmer4 tell me this:
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anonymous
  • anonymous
is thsi wrong that is all i need to know
anonymous
  • anonymous
i dont have a lot of time right now so is it?
anonymous
  • anonymous
it was right i got 100%
anonymous
  • anonymous
here is medal!
anonymous
  • anonymous
hope u get that starbucks!

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