Questions can be found here:

http://www.freewebs.com/kgpretty/math.JPG

I attempted #4.. can you use 4 .. determinants? to solve the equation like:

For #7, I've think I've got that covered. Just tell me.. would the augmented matrix be:Code:`x|k l| -a|l m| x|k l| -a|l m|`

|m n| |n o| |o k| |n o|

|log1 log1 log1|0|

to represent the first row?

or |1 1 1|0|, where log is factorised out?

For all the other questions.. I simply don't know what to do