ANSWER NEEDED ASAP For any rational number m/n and any positive real number a, a^-m/n, means 1/a^m/n

- 70

this is the answer for you hope it

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