ramirokool
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
Delete
Share
This Question is Closed
ramirokool
Best Response
You've already chosen the best response.
0
@MiaKitty @UnkleRhaukus Help
MiaKitty
Best Response
You've already chosen the best response.
1
This is just like the question I helped you with earlier, but you have to combine them together, what do you think?
ramirokool
Best Response
You've already chosen the best response.
0
Either B or C
UnkleRhaukus
Best Response
You've already chosen the best response.
1
\[y=mx+b\]
where \(m\) is the rate of change
and \(b\) is the initial value
MiaKitty
Best Response
You've already chosen the best response.
1
Well, it isn't B, because you don't subtract values in this equation, so?
uber1337h4xx0r
Best Response
You've already chosen the best response.
0
I have a question for you, ramiro:
Let's say you buy two movies. How much money will you be left with?
ramirokool
Best Response
You've already chosen the best response.
0
Ummm probably 0
ramirokool
Best Response
You've already chosen the best response.
0
or at least 3 bucks or something
uber1337h4xx0r
Best Response
You've already chosen the best response.
0
Hmm... tell me this: how much would two movies cost?
MiaKitty
Best Response
You've already chosen the best response.
1
I have to go now! Anyone who can help Ramirocool can. :)
ramirokool
Best Response
You've already chosen the best response.
0
@UnkleRhaukus I got A
UnkleRhaukus
Best Response
You've already chosen the best response.
1
note
\(mx+b=b+mx\)
ramirokool
Best Response
You've already chosen the best response.
0
@UnkleRhaukus D.
uber1337h4xx0r
Best Response
You've already chosen the best response.
0
@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
Best Response
You've already chosen the best response.
1
if one movie costs $4.50
two movies costs 2×$4.50=
ramirokool
Best Response
You've already chosen the best response.
0
8.50
ramirokool
Best Response
You've already chosen the best response.
0
@UnkleRhaukus
uber1337h4xx0r
Best Response
You've already chosen the best response.
0
Close. But do it on paper to be safe.
ramirokool
Best Response
You've already chosen the best response.
0
@uber1337h4xx0r /yup B
UnkleRhaukus
Best Response
You've already chosen the best response.
1
\[2\times4.50=2\times4+2\times0.50=8+1=\]
ramirokool
Best Response
You've already chosen the best response.
0
@UnkleRhaukus Sorry for the long wait C.
ramirokool
Best Response
You've already chosen the best response.
0
Right?