Mathematics
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OpenStudy (anonymous):
please help me on this question I beg you!
(FAN + MEDAL)
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OpenStudy (anonymous):
@Mertsj PLEASE HELP ME
OpenStudy (mertsj):
It looks to me like c(m)=45 if x < 201
OpenStudy (anonymous):
WHATABOUT THE OTHER ONE
OpenStudy (anonymous):
Sorry for the caps
OpenStudy (mertsj):
45 + something. Can you figure out what?
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OpenStudy (anonymous):
100
OpenStudy (mertsj):
If x is greater than 201, you find the cost by multiplying the number of minutes by .10 and adding 45
OpenStudy (anonymous):
I got 55
OpenStudy (mertsj):
You got 55 for what?
OpenStudy (anonymous):
45 + ?
?=55x
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OpenStudy (mertsj):
you find the cost by multiplying the number of minutes by .10 and adding 45
OpenStudy (anonymous):
there are 5 number of minutes, I chose 100
OpenStudy (mertsj):
You have two groups of minutes:
Group 1 less than 201
Group 2 greater than 201
OpenStudy (anonymous):
so 65.1
OpenStudy (mertsj):
What is the cost of 10 minutes?
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OpenStudy (anonymous):
46?
OpenStudy (anonymous):
@Mertsj
OpenStudy (mertsj):
Look at your chart.
OpenStudy (mertsj):
I'm pretty sure it says that 10 minutes cost $45
OpenStudy (anonymous):
yeah I know but I thought it was too obvious
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OpenStudy (anonymous):
so that's what I write for the second one
OpenStudy (mertsj):
What about 100 minutes. How much does that cost?
OpenStudy (anonymous):
also 45$
OpenStudy (mertsj):
Where is the link to the problem?
OpenStudy (mertsj):
What about 200 minutes. How much does that cost?
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OpenStudy (anonymous):
I was trying to type the question out so I can attarck more people
OpenStudy (anonymous):
butthen I had to refresh
OpenStudy (anonymous):
and you came back
OpenStudy (mertsj):
How much does 200 minutes cost?
OpenStudy (anonymous):
they all cost 45$ except for 201 and 300
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OpenStudy (mertsj):
So would it be correct to say if the number of minutes is less than 201 then the cost is $45
OpenStudy (anonymous):
I guess so
OpenStudy (anonymous):
tomorrow I have a test on questions like thes
OpenStudy (mertsj):
Now, multiply 300 by .10. What do you get?
OpenStudy (anonymous):
3000
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OpenStudy (anonymous):
sorry read that wrong
OpenStudy (mertsj):
Did you see the decimal point?
OpenStudy (anonymous):
30
OpenStudy (mertsj):
Now add 45. What do you get?
OpenStudy (anonymous):
75
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OpenStudy (mertsj):
And, according to the problem, how much does 300 minutes cost?
OpenStudy (anonymous):
$75
OpenStudy (anonymous):
yes
OpenStudy (mertsj):
So would it be correct to say that if the number of minutes is greater than 201 the cost is 45 + number of minutes times .10 ?
OpenStudy (mertsj):
So let us finish the problem.
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OpenStudy (anonymous):
ok
OpenStudy (mertsj):
c(m)=45 if x < 201
c(m)=.10m+45 if x > 201
OpenStudy (anonymous):
now I have to go over all of this and review more problems like thisUGHGHGHGHG
OpenStudy (mertsj):
Good luck.
OpenStudy (anonymous):
Thank you for your help btw
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OpenStudy (mertsj):
yw