Alocal hospital tracked the blood type and gender of the patients they saw on an average day. which is a fair statement?

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

y = -1

x = 8

hope this !

answer is  

a.

7 in. x 11 in.

hope you get this right.