help with 2 questions?

- anonymous

help with 2 questions?

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- katieb

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- anonymous

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- anonymous

:T

- anonymous

k, so for the first question you posted, find the two possibilities

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## More answers

- anonymous

@heretohelpalways either B or D

- anonymous

you know the circles would be filled in

- anonymous

and there are two possibilities

- anonymous

that should help

- anonymous

I am not going to tell you which one is right, though

- anonymous

try solving the inequalities

- anonymous

alright brb

- anonymous

2x−6≥10 and 2x−6≤−10

- anonymous

now, solve those equations

- anonymous

if you don't know how, then go to https://www.khanacademy.org/math/algebra/linear_inequalities

- anonymous

x greater or equal than 8 for the first one?

- anonymous

@heretohelpalways i got the first one. could you help me with the second one pls?

- misty1212

HI

- misty1212

i will give you the answer to the second one on the condition that you tell me exactly where this question came from
it is written by someone who does not know math

- anonymous

@misty1212 hey. its from my virtual course, written by teachers. and are you sure?!

- misty1212

yes i am sure, but i need to know exactly what course

- misty1212

i can walk you through to the answer step by step, and show you what the mistake is

- anonymous

FLVS

- misty1212

how did i guess
can you please provide me with the question id number
they need some serious help down in florida

- anonymous

i am afraid there is no question id visible, how can i find it?

- misty1212

just give me the unit number
it is number 13 i can see, but i am not sure what course, unit number etc

- anonymous

oh ok 5.14 segment one exam part 1. its the algebra 1 course.

- misty1212

ok lets solve it and find the mistake
ready?

- anonymous

yes, and i am emailing my teacher as we speak letting her know.

- misty1212

\[-np-3\geq 7(c-4)\] distribute on the right
\[-np-3\geq 7x-28\] is the first step

- misty1212

add \(3\) to both sides
\[-np\geq 7c-25\]

- misty1212

now here comes the mistake
you have to divide both sides by \(-p\) to solve for \(n\)

- misty1212

so it might be
\[n\geq -\frac{7c-25}{p}\] or \[n\leq -\frac{7c-25}{p}\] they want you to choose the second one because if you divide by a negative number you have to change the inequality
BUT

- misty1212

you do not know whether \(-p\) is positive or negative
they want you to think it is negative because of the minus sign, but there is no way of knowing whether \(-p\) is a positive number or a negative number
it is a serious error

- misty1212

the poor misguided folks at FLVS make this mistake all the time, because apparently they do not understand variables
for example, if \(p=5\) then \(-5=-5\) and is negative
BUT
if \(p=-5\) then \(-p=+5\) and it is positive

- misty1212

long and the short of it is, you cannot solve an inequality with variable coefficients
sorry about the state of education in your area

- anonymous

its ok lol, thank you so much for telling me how it was not written correctly i really appreciate it. may i show you one more question i already have an answer but i just want to make sure it is right. @misty1212

- misty1212

if you do not feel like rocking the boat , just choose \[n\leq -\frac{7c-25}{p}\] but i hope you understand that you cannot solve this question

- misty1212

yeah sure

- anonymous

its ok. i would had taken your word for it even if you wouldn't had explained lol and here it is

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- misty1212

hold on one secnnd

- anonymous

alright

- misty1212

your selected answer is wrong
it should be
\[3x+y=-7\] if you substitute you will see it works for both points

- anonymous

@misty1212 thank you so much for your time!

- misty1212

yw

- misty1212

\[\color\magenta\heartsuit\]

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