In a sequence of numbers, (look at image below)

aₙ = 6n - 6

Step-by-step explanation:

a1 = 6 x 1 - 6 = 0

a₂ = 6 x 2 - 6 = 6

understand that i don't know the answers

will someone answer his question

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