The area would be (x+3) (4x-1) which is 4x^2 +11x -3. The perimeter is 2(x+3) plus 2(4x-1) which is 2x +6 plus 8x-2 which is 10x +4. If x=7 then the perimeter is 74 ft.
it would be A or D for the math of d=-2
They will never intersect nor be parallel.
Is this what you are asking? If they will always, sometimes, or never intersect?
Answer: B) A=1/2(7)(12).
Explanation: The formula for area of a triangle is 1/2bh. Only B maintains this formula.
Sin x = 7/12
x = arcsin (7/12) = 35.69°
