Answer:

Explanation:
Let the length of the rectangle be
units.
We were given that the length is <em>3 less than twice the width.</em>
This implies that: 
We have that the area of this rectangle is 50 square inches.
Recall that area of rectangle is given by:


Therefore the required equation is 
I'm pretty sure it's doctorate
Answer:
D. f(x) exist for all real numbers where x ≤ -1 or x ≥ 1
Explanation:
You can't divide by 0 and
You can't have a negative squareroot.
So solve for when x=0 for the denominator,
and when is x<0 for the squareroot.