Probably the last one
Use the equation for the area of a triangle 1/2(bxh)
Then multiply that number by 2 to get the area of the complete shape.
the answer to the problem is 2y^3 3x3y4+4
Your translation is "to solve or decide" hope this helps!
Lesser x is 1/2 or 0.3
greater x is 4
Answer: 3m
And I had to write something for this to be ong enough so thats what this is:)