7/12 is the answer.
I hope this helps you
Yes they are equivalent.The reason is if you expand them and simply them you will get the answer of 3x+5y+10.
First question : A
2cm×1cm×2+2cm×4cm×2+1cm×4cm×2= 28cm^2
Third question
7x+3(x-2)-4x+8
= 7x+3x-6-4x+8
=7x+3x-4x-6+8
=10x-4x+2
=6x+2
Idon't know the second one but i hope i could still help
Answer: the answer is D because it is repeated many times
