ISI 2008 Q6 and Q7

[shiva]

MSQE_2008.pdf

Please help with Q6 and Q7. I am not sure with my answers, if you have final answers please post them.

[ecom]

http://www.alexmthomas.com/wp-content/uploads/2007/02/ISIsolutions.pdf 

checkthis :)

[shiva]

I want ansers for eco part Q6 and Q7