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plug in -3 for c, what do you get?

let me see :)

-14
?

is that right ?

examples of absolute value
|x|=x
|-z|=z
|100|=100
|-345|=345
etc etc etc

i'm sorry an you explain more

Do you know the definition of absolute value?

i'm sorry i don't

o ok so the "-3" is just a 3 and not a "-3 " so the answer would be 14

You are half right...

Let's back up...

"-3" is still -3. That doesn't change. The problem says that c = -3. So, c = -3

But, the problem says that you have to find /4c-2/ when c = -3

o ok thanks man were did you get the ? /-12-/ + /-14? ?

Where did I get -12???

yeah :)

-12 is the product of 4 and -3

When you plug in -3 for c, you multiply 4 x -3

o i see now wow xD thanks man for all of your help

ok awesome man thanks i will do :)

No, how does that work?

Hold down the shift button when pressing the \ key

Oh I see, I was simply using the same notation as "sup"

Thanks for pointing that out, though :)

Hold down the shift button when trying to post || absolute value symbols

Like this?
|4c-2|

Precisely

Thanks!

Isn't there a keyboard shortcut for superscript too? Might come in handy for exponents

i am stuck on this one -/-10-z,/z
=-3

i got 30

but i think it is wrong

Ok, rewrite the expression after plugging in z = -3

Also, use |, it's the key above the enter key. You must use the shift key

-/10 (-3)/
like that ??

Nope, you are using /. Press shift and \

And no, the expression is missing a minus

i no clue what the shift thing is lol xD

*have

:D

i think i am so post to - it and not x it ?

Be careful, you also missed the negative in front of the 10

o i see yeah i was writing it wrong xD

Rewrite the expression after plugging in -3 for z

-/-10-3/ = 13 ?

z = -3, but the expression is -10 MINUS z.
So, it should be -10 - (-3) which is actually -10 + 3

so it's 7 ??

What is 7?
You are jumping ahead... :)

sorry xD

haha it's ok :)

When you plug in -3 for z, you get:
-|-10 - (-3)|

That look about right to you?

yeah thanks :)

Ok, so we know that minus -3 is actually +3. So rewrite the entire expression with +3 in that spot

ok so it's -|-10 - (3)|

Not quite,
Minus -3 is +3. So, it is -|-10+3|

a negative and a negative make a positive

o i see but how would i solve that ??

- 7 so it's just 7 ?

The absolute value of -7 is 7. Yes.

o ok i see now but on the answer for the study guide he put -7 why not 7 ??

What's in front of the absolute value?

i can't tell what you are looking for sorry but he had like a -1 -10 + -7 ?

This is the expression:
-|-10+3|. What is in front of the absolute value?

a negative

Right

So look at this...
|-7| = 7
What is -|-7| ?

Since the negative sign is in front, it makes the expression negative. So -7 is the answer.

-|-7| is different than |-7|

o so it's just 7

No, it isn't just 7.

The expression in your problem has a negative in front like this,
-|-7|

yes

ok so when you have the - in front of the problem the answer is most likely going to be a - ???

Don't think "most likely". You'll get the wrong answer. That's just guessing.

Think about this...
what is -2(1 + 3) ?

Yes

I'm glad to help. Just be careful not to forget negatives. They matter a lot.

yeah i know i got to keep on practicing those xD