Hi There!!
Here's the answer below.
Step-by-step explanation:
Well, The Part A
The area is...
[tex](x +4)[/tex] [tex](2x+6+ x-4)[/tex]
[tex]=[/tex] [tex](x+4) (3x+2)[/tex]
[tex]=[/tex] [tex]3x^{2} + 14x + 8[/tex]
Now, We finish Part A.
We got to do Part B.
The length is [tex]x-4[/tex] and it's [tex]12[/tex]
[tex]x-4 = 12[/tex]
[tex]x = 12 +4[/tex]
[tex]x = 16[/tex]
Now, We got to the area.
[tex]3(16)^{2} + 14(12) + 8[/tex]
[tex]= 3(256) + 168 + 8[/tex]
[tex]= 768 + 176[/tex]
[tex]= 994[/tex]
So, Your best answer choice is [tex]994[/tex]
#[tex]Be[/tex] [tex]Bold[/tex]
[tex]_{Loserbrazts}[/tex]
