F(x) = x^2 is a parabola with vertex at the origin (0,0).
f(x) = x^2 - 5 is a parabola shifted down 5 units so it's vertex would be at (0, -5)
The correct answer is Letter B
The area would be 24 in. because to find the area of a triangle you need to multiply the height by the base then divide it by 2 and you get your answer.
6*8=48
48/2=24
Hope this helps.