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Mathematics 10 Online
iosangel:

math help plz.....

Shadow:

What is your question?

iosangel:

iosangel:

iosangel:

i need help on 3,4,5,6 and seven

Shadow:

You already setup the algebraic equations?

iosangel:

yes,

Shadow:

So you're having trouble inputting the data from #3 into your equations?

iosangel:

yes

Shadow:

Can I see your equations?

iosangel:

plan A: 60+0.05xtx1.06 plan b: 80+0.02xt1.06 plan c: 99+0.05xtx1.06 plan d: 75+0.07xtx1.06

iosangel:

the "x" was supposed to be "*"

Shadow:

What does that t stand for...

iosangel:

texts

iosangel:

opss i think i kinda messed up on that

Shadow:

Do you want to try and fix it?

Shadow:

Or I show you

iosangel:

yea, plz show me

Shadow:

Plan A: \[1.06(60 + 0.05t + 25x)\]

Shadow:

Where, t = # of texts x = # of gb gone over

iosangel:

oh so plan b would look like this? (80+0.02*t) (1.06)

iosangel:

how ddi you get 25?

Shadow:

"For every 1 GB over the amount allotted, you are assessed a $25 monthly fee"

iosangel:

ohhh, so plan B would be 1.06(80+0.02t+25x)

Shadow:

Yes, if there is no amount of GB over, then x is 0, and 25 disappears since 25 times 0 is 0

Shadow:

So we can leave it in there.

iosangel:

plan C: 1.06(99+0.05t+25x) planD:1.06(75+0.07t25x) right?

iosangel:

0.07+25x*

Shadow:

mhm

iosangel:

so how would i do 2?

Shadow:

Input 500 for t

iosangel:

what about the sales tax?

iosangel:

plan A 1.06(60+0.05*500+25x) correct?

Shadow:

Yes. But since there is no going over GB you can ignore 25x in your calculations. Also, since we just need to know the cheapest, you can ignore the 1.06. This will increase all plans by the same proportion.

iosangel:

so, plan A would be the cheapest correct?

Shadow:

Yes

Shadow:

I have to go. Follow these equations and you should be fine. t = # of texts x = # of GB gone over Plan A \[1.06(60 + 0.05t + 25x)\] Plan B \[1.06(80 + 0.02t + 25x)\] Plan C \[1.06(99 + 0.05t + 25x)\] Plan D \[1.06(75 + 0.07t + 25x)\]

Shadow:

If no GB has been gone over, x = 0

iosangel:

oh, ok thanks!

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