I got you, my answer is x<4
Answer:
D
Step-by-step explanation:
You put square roots of 148 in the calculator than it will give you the answer
Make a change of coordinates:


The Jacobian for this transformation is

and has a determinant of

Note that we need to use the Jacobian in the other direction; that is, we've computed

but we need the Jacobian determinant for the reverse transformation (from

to

. To do this, notice that

we need to take the reciprocal of the Jacobian above.
The integral then changes to

Trapezoid because a trapezoid is a quaderateral with 4 sides