Which expression represents the area of the rectangle?
A)
4x2 + 19x + 17.5
B)
6x2 + 38x + 17.5
Eliminate
C)
8x2 + 38x + 35
D)
12x + 24
http://www.usatestprep.com/modules/gallery/files/18/1843/1843.png

Question

Which expression represents the area of the rectangle?
A)
4x2 + 19x + 17.5	
B)
6x2 + 38x + 17.5	
Eliminate
C)
8x2 + 38x + 35	
D)
12x + 24
http://www.usatestprep.com/modules/gallery/files/18/1843/1843.png

trojanpoem · Answer

B)

trojanpoem · Answer

(2x + 7)(4x+ 5) = 8 x^2 + 38 x + 35     divide by 2
4x^2 + 19 x + 17.5

anonymous · Answer

please explain this to me i dont understand were you got 38x

trojanpoem · Answer

fine , to multiply ( 2x+ 7) (4x+5 )  you multiply 2x * 4x and 2x* 5 , 7 * 4x , 7 * 5 
now you have 2x*5 and 7*4x = 10 x + 28 x = 38 x
2x* 4x = 8 x*x = 8 x^2 
7 * 5=  35

anonymous · Answer

alright thank you

trojanpoem · Answer

YW