HELP ME PLEASE GUYS AHHHHHHHHHHHHHHH DYING

[mint_chocolate5]

MATH HELP PLEASEEEEEEE
I just need help setting up the equations and such D:
Subsitution/ Elimination

Rani is comparing the monthly costs from two Internet service providers. Netaxes charges a flat monthly fee of $10, plus $0.75 per hour spent on-line. Webz charges a flat monthly fee of $5 plus $1 per hour
A) Determine when the monthly costs are the

Comments

[vtsoccagrl]

1.A)
Netaxes: 10 plus .75 of every hour: 10 + 0.75x.
Webz: 5 plus 1 of every hour: 5 + 1x.

Set the 2 equations equal to each other.

10 + 0.75x = 5 + 1x

x = hr

Subtract 0.75x from the left side to the right. Then subtract 5 from the right side to the left.

5 = 0.25x

You can figure out x from there. Plug in you answer in the original equation and you'll see that both sides will be equal.

1.B) Plug in x = 30. Then see which one costs less.

[mint_chocolate5]

Oh really? THANK YOU ♥

Ommg I actually know this unit but I'm in bed so I'll try my best.

[asianized_x]

Let x rep hours spent online.
Let y rep monthly price.

Netaxes equation:
0.75x + 10 = y
webz equation:
x + 5 = y

so isolate x in the webz equation and sub it into the netaxes one. I'm sure you understand that part but ifnot, ask when I wake up.
So when you find out what the y and x are, then that's the point of intersection.
The x coordinate is when the monthly cost will be the same if I remember correctly. (#of hours)

now for b, you just sub in 30 for x into both equatons. Whichever equation has a lower value of y is the better choice.

I'll explain the second equation tomorrow, time to sleep for real. XD

Night~

Re: Ommg I actually know this unit but I'm in bed so I'll try my best.

[asianized_x]

Oh aww someone beat me to it as I was slowly poking my iPod xD

idk try both ways,
because they both work. XD

Re: Ommg I actually know this unit but I'm in bed so I'll try my best.

[asianized_x]

I'm sorry I lied.
I think I did it her way when Richard taught it to me. ....
Idek I'm too tired ROFL. KJUST IGNORE ME DX

Re: Ommg I actually know this unit but I'm in bed so I'll try my best.

[asianized_x]

I. I LIED AGAIN.
IT WORKS EITHER WAY.
KBYE

/spammer is gone now ;)

[swimmer_chen]

Rani is comparing the monthly costs from two Internet service providers. Netaxes charges a flat monthly fee of $10, plus $0.75 per hour spent on-line. Webz charges a flat monthly fee of $5 plus $1 per hour
A) Determine when the monthly costs are the same
B) Rani plans to use the Internet for at least 30 h each month. Which provider should she choose? Explain.

Netaxes equation is .75x +10 =y
Webz equation is x+ 5= y
you make it so x+5 = .75x+10
then you solve for x, which is the hours used to make the monthly costs the same.
then for B, you just substitute 30 for x

that's it! ehh but i didn't really explain where i get things from or why something is what, so if you don't get how i solved this, ask!

[swimmer_chen]

yeah other people probably explained it better than me... and i don't remember how to do 2, sorry

i wasn't good at that so i never bothered to remember mengo~ >.

[swimmer_chen]

uwaaa i think i remember a bit... how to start:

so basically what i was thinking was you find how much each would cost for 1000 liters... then......OMG ignore me! sorry

[mint_chocolate5]

Oh okay, THANK YOU ♥

[keeconk]

the last time I did maths would be like four years ago, babe.
ROFL. But it seems everyone else still know this stuff. :D