.0099 is the only positive number above zero and would have the highest value
The answer to (1+_÷7+4)÷8= 4/7 is -3 I believe
100 miles/4 hours = 25 miles per hour
I'll go out on a limb and suppose you're given the matrix

and you're asked to find the determinant of

, where

and given that

.
There are two properties of the determinant that come into play here:
(1) Whenever a single row/column is scaled by a constant

, then the determinant of the matrix is scaled by that same constant;
(2) Adding/subtracting rows does not change the value of the determinant.
Taken together, we have that
Its the first one because everytime you rotate the shape it will stay within the lines