Given the series 2+ 6 + 18 + .., use an appropriate formula to find S12. Worth 5 marks

*include solution

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads