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Mathematics 19 Online
OpenStudy (anonymous):

please help me on this question I beg you! (FAN + MEDAL)

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?

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

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?

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

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?

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

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

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

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.

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

OpenStudy (mertsj):

yw

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