In order to solve this problem you need to consider the states of matter and the amount of products.
If there are more products than reactants than there is an increase in entropy.
States of matter: increasing the motion of particles increases entropy.
Molecular movement:
Solid<Liquid<Gas
Changing states of matter from left to right would be an increase in entropy.
Changing states of matter from right to left would be a decrease in entropy
The answer is number 3
Answer: 
Explanation:
Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
A more reactive element is one which can easily lose or gain electrons as compared to the other element.
As Magnesium is more reactive than tin, it can easily displace tin from its salt solution
and form magnesium chloride and tin in elemental form.
The balanced chemical equation is:

Answer:
3
Explanation:
Use the rise over run method. plot the necessary points first in the x and y axis