Can someone please help me? I don't know how to do this. I will mark brainliest! Thanks!

Answer:
So it gives you a little picture and tells you what would the question be if you had this graph.
Step-by-step explanation:
The correct answer would be B, find the area because the 4x + 3 is your length and 3x is your length, A = length * width. So the answer is B, find the area.
Answer:
Step-by-step explanation:
A) Length = 4x +3
Width = 3x
Perimeter = 2*(length + width )
= 2*(4x + 3 + 3x) {Add the like terms}
= 2*(7x + 3)
= 2*7x + 2*3
= 14x + 6
B) Area = length * width
= (4x + 3) * 3x
= 4x *3x + 3*3x
= 12x² + 9x
C) x = 8
Perimeter = 14x + 6 = 14*8 + 6 =112 +6 = 118 units
Area = 12x² + 9x = 12*(8)² + 9*8
= 12*64 + 72
= 768 + 72
= 840 square units