Please see attachment I am stuck on that entire problem. Any help is appreciated!

1) entropy is the degree of randomness so for a part you need to see which side has more gaseous molecules .If entropy of the product is more than reactant then it is an increase and has positive sign.
2)If reaction is exothermic then it means products side has high temperature .apply Le chatlier principle and on raising the temp equilibrium will shift in the direction of low temp
 

now on increasing temp it is shifting in the direction of reactants(R) so K will decrease
Keq= [P]/[R]
as you increase R conc it will result in decrease in K
in one post I can answer one question.Pl put every question as a separate post so that I can help you