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well, let's draw a picture of a 3*4 mirror with a frame that is x inches thick
|dw:1440372180188:dw|

So the answer would be C right?

hm, not C, let's keep going
|dw:1440372299021:dw|
any ideas?

can you tell me what the length and width are in terms of x?

\[x^3\]

|dw:1440372540133:dw|

4x?

almost but not quite...
length of the mirror + width of the frame on each side = ?

0?

|dw:1440372618481:dw|
maybe just look at it from one dimension?

the length of the mirror is 4 and the width of the frame is x, so the total length is...?

4x^2?

nope, not quite...
|dw:1440372717991:dw|

Idk.

pretend that it's a straight line... add together length of mirror + width of frame = ?

Is the answer C?

the length is 4, agreed?

144?

... Y u so genius @Vocaloid

yes

ok, now let's put the frame around it now|dw:1440373034973:dw|

just add: width of frame + length of mirror + width of frame = ?

your answer should involve x somehow

IS the answer D?

no, the answer isn't D, please stop guessing...

|dw:1440373181795:dw|

Lul

-.-

the length is 4 + x + x, agreed?

U sound like my mom when I do calculus. :3

Yes

alright, now can you find the width?|dw:1440373262344:dw|

3*4*x?

not quite.... just like before, we add
width of mirror + width of frame + width of frame = ?

|dw:1440373318819:dw|

3+2x

So its B?

area = (width)*(length)
14 = (4 + 2x)(3 + 2x)
simplify that and you will get your answer....

start by doing FOIL on the right side

Is it A?

start by doing FOIL on the right side, please.....
(4 + 2x)(3 + 2x) = ??

@Vocaloid I believe she is correct

I am a girl...

You said it wasn't b...

do you understand FOIL?

Earlier

Yes. I am just in a big hurry

Lol... U sound real stressed

VERY

2x*2x+2x*3+4*2x+3*4-12

almost...
(2x + 3)(2x + 4) = (2x)(2x) + (4)(2x) + (3)(2x) + (3)(4)

My school starts tomorrow and i almost finsihed

I am tring to get this done

4x^2 + 8x + 6x + 12 = 14

there is 40 more questions i have to do

So the answer is A.

right

Thank you.