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a) 7000 = 5x + 7y , where x is digicel and y is lime

i had that for a and i thought mine was wrong, now im understanding :)

it could be 7000 > 5x + 7y

because she can't go over but can be under

oh i get it

bcuz the 7000 is her budget

so wat about part b and c

let me know what you got solving for y or x and I'll check you. You should be fine from there

oh im not good at graphs thats why i need the help

ok i got y=1000 and x=1400

so those are the intercepts, What is the equation?

|dw:1351254063633:dw|

is it that?

7000 = 5x + 7y
7000 - 5x = 7y
1000 - (5/7)x = y
The graph looks correct.

lets change the cost of digicel to 10 for easy math sake

7000 = 10x + 7y
(0,1000) (700,0)

|dw:1351258124097:dw|

So what do you think the answers are for c

ok thanks i knw what u mean but im not sure how to explain it in terms of intercepts.

Look at the lime intercept of the 2 graphs. Do they change? same for the digicel, do they change

correct for lime, it stays the same. How does the digicel change

the digicel changes because there was an increase in the cost.

correct but in what way does it change? That is how you need to answer this question

increase of decrease

or**

oh the x intercept decreases

right. Good job and good luck

omg thank u so much, im understanding so much better now

What are your other questions?

do u have an email address, its in a word document

wow that assignment is awful

i know right, and its like we have to research it because they haven't though us as yet

taught*

I took econ 3 years ago. I can't remember the other questions sry.

ok

thanks anyway