Need MATH help...

[firestar46]

2 problems:

1. Comgas, a Cambridge power company, charges $6.56 per month, plus an extra 87.357 cents a therm up to 28 therms and 57.987 cents per therm after 28 therms...

Express "C" (your monthly cost in dollars) as a function of "x" (number of therms of gas used a month)...

2. Fed. Tax you owe=a function of total taxable income ("d", in dollars).
In 1997, if a person's taxable income was not more than $20000=he paid 15% of taxable inc.
if a person's taxable income was more than $20000=he pays 15% of $20000, and 28% on the amt. over $20000...

Write I(d) (tax owed in 1997) as a piecewise defined function of your taxable income, "d"...

WTF?!?!? How do I even begin to solve that out? Help me!!!

[edit] And I'm in 12th grade, g*ddammit, taking a Intro to Calculus course after school at Polytech Univ. in B'klyn, you bastards! [/edit]

 

[serialb]

C = 6.56 + 87.357x if x <= 28
C = 6.56 + 87.357x + 57.987 (x-28) if x > 28

same applied to the second problem

BTW, what grade are you in?

 

[firestar46]

<< C = 6.56 + 87.357x if x <= 28
C = 6.56 + 87.357x + 57.987 (x-28) if x > 28

same applied to the second problem

BTW, what grade are you in? >>



Nice! serialb 0wnz...anyone else to help me???

 

[HonkeyDonk]

Hey Serialb, you're equations are almost correct.

<<C = 6.56 + 87.357x if x <= 28>>

that's correct.

<<C = 6.56 + 87.357x + 57.987 (x-28) if x > 28>>

that's not correct b/c what if x = 30?

C = 6.56 +87.357*30 + 57.987*(30-28)

87.357 can only have up to 28 therms, so therefore the correct equation for X > 28 should be:

C = 6.56 + 87.357*28 + 57.987*(x-28); x = number of therms > 28.

 

[HonkeyDonk]

And, Firestar46...this is very easy math, why don't you try doing the problem yourself first, what math is this anyways and how old are you?

 

[firestar46]

<< Hey Serialb, you're equations are almost correct.

<<C = 6.56 + 87.357x if x <= 28>>

that's correct.

<<C = 6.56 + 87.357x + 57.987 (x-28) if x > 28>>

that's not correct b/c what if x = 30?

C = 6.56 +87.357*30 + 57.987*(30-28)

87.357 can only have up to 28 therms, so therefore the correct equation for X > 28 should be:

C = 6.56 + 87.357*28 + 57.987*(x-28); x = number of therms > 28. >>



Sir, you are right...I figured that out a while ago however...the second problem would be necessary now... Thanx tho

 

[serialb]

You got me HonkeyDonk

it should be:

C = 6.56 + 87.357 * 28 + 57.987 (x-28) if x > 28

 

[firestar46]

<< And, Firestar46...this is very easy math, why don't you try doing the problem yourself first, what math is this anyways and how old are you? >>



Like I said, figured it out a while ago...I was just a bit out of practice...'tis all...

 

[khtm]

<< BTW, what grade are you in? >>



I don't believe this question was ever answered.

-khtm-

 

[firestar46]

Up with your freakin answer, ya animals!

 

[khtm]

<< Up with your freakin answer, ya animals! >>



Thanks, firestar, for letting us know that you're in grade 7

-khtm-

 

[firestar46]

<<

<< Up with your freakin answer, ya animals! >>



Thanks, firestar, for letting us know that you're in grade 7

-khtm- >>



lol...don't make me get my big brother on you...he'll show you what for, you meanie!

/me runs and plays with his power rangers...