anonymous
  • anonymous
John wants to rent movies over his school vacation. The cost for the movie rental is $4.50 per movie. John starts out with $20. Write an equation for the amount of money, y, John will have after x amount of movie rentals. Answer y = 20 - 4.50x y = 4.50x - 20 y = 20 + 4.50x y = 4.50x
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
anonymous
  • anonymous
This is just like the question I helped you with earlier, but you have to combine them together, what do you think?
anonymous
  • anonymous
Either B or C

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UnkleRhaukus
  • UnkleRhaukus
\[y=mx+b\] where \(m\) is the rate of change and \(b\) is the initial value
anonymous
  • anonymous
Well, it isn't B, because you don't subtract values in this equation, so?
anonymous
  • anonymous
I have a question for you, ramiro: Let's say you buy two movies. How much money will you be left with?
anonymous
  • anonymous
Ummm probably 0
anonymous
  • anonymous
or at least 3 bucks or something
anonymous
  • anonymous
Hmm... tell me this: how much would two movies cost?
anonymous
  • anonymous
I have to go now! Anyone who can help Ramirocool can. :)
anonymous
  • anonymous
UnkleRhaukus
  • UnkleRhaukus
note \(mx+b=b+mx\)
anonymous
  • anonymous
anonymous
  • anonymous
@UnkleRhaukus : I think at Ramiro's age, formulas like that are more confusing that actually using real life examples. Granted, I'm under the impression that Ramiro doesn't care either way, so it probably doesn't matter.
UnkleRhaukus
  • UnkleRhaukus
if one movie costs $4.50 two movies costs 2×$4.50=
anonymous
  • anonymous
8.50
anonymous
  • anonymous
anonymous
  • anonymous
Close. But do it on paper to be safe.
anonymous
  • anonymous
UnkleRhaukus
  • UnkleRhaukus
\[2\times4.50=2\times4+2\times0.50=8+1=\]
anonymous
  • anonymous
@UnkleRhaukus Sorry for the long wait C.
anonymous
  • anonymous
Right?

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