Answer:
<h2>Zero</h2>
Step-by-step explanation:

Shortest is 3/4 longest is 1 1/2. 1 1/2 -3/4=3/4
Let
x---------> the thickness of the frame in feet
At-------> Area of the mirror and the frame in square feet
we know that
------> equation 
--------> equation 
equate equation
and equation 

therefore
the answer is the option

Answer:
14 blocks
Step-by-step explanation: