anonymous
  • anonymous
help will give medal
Mathematics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Javier has a job installing windows. He earns a rate of $75 per day plus $8 per window installed. He also receives a stipend of $25 for snacks. Javier knows his weekly earnings can be shown with the following expression: 75d + 8w + 25 Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points) Part B: If Javier works for 5 days and installs 48 windows, how much does he earn? Show your work to receive full credit. (4 points) Part C: If Javier gets an increase in his stipend and receives $40 for snacks, would the coefficient, variable, or constant in the equation change? Why? (3 points) (10 points)
anonymous
  • anonymous
a) (8/75) (w/d) (25)
anonymous
  • anonymous
Part A: A Coefficient is a number accompanying a variable so we can say 75 or 8. For a variable we have d and w. The only constant here is his snacking money which is 25! Part B: You need to show work here, remember! \[(75*5) + (8*48) + 25 = 784\] Part C: We already identified what his snack money is! Ask questions if you don't understand something here!

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anonymous
  • anonymous
that look right (75*5) +(8*48)+25=784 375 + 384 + 25 = 784
anonymous
  • anonymous
Yep! Looks perfect.
anonymous
  • anonymous
and I dnt understand part c very well
anonymous
  • anonymous
Let's start by breaking down the equation: 75d + 8w + 25 What do we call the "d" and the "w"?
anonymous
  • anonymous
variables
anonymous
  • anonymous
Bingo! Now what about the 75 in front of the d, and the 8 in front of the w?
anonymous
  • anonymous
coefficients
anonymous
  • anonymous
Right again, so now the +25 at the end is what?
anonymous
  • anonymous
a constant
anonymous
  • anonymous
So if we look back at the word problem we can see the constant of 25 is his snacks! So, if we increase his snacking stipend we thus increase the constant.
anonymous
  • anonymous
oh so the constant would then be 40 instead of 25
anonymous
  • anonymous
Exactly! You got it.
anonymous
  • anonymous
omg thank you so much I understand now yay
anonymous
  • anonymous
I am so glad! Always happy to help.

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