xvxvxv

Okay melody thank you and I will wait 

I want more explanation for question 24 

are the pictures still unclear 

amaizing alan =D  ... Now its very clear 

and the answer is inelastic 

thank you alan and melody 

now its very clear 

Thanks for all ... alan and melody 

Thank you alan ... waiting for remaining questions 

for 19 .... also now its very clear 

for 16 .. Now its very clear  thank you