according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.
if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:
if you are asking how many of each then:
18 social media ads
6 newspaper ads
you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.