Can someone please explain this?

-35

Step-by-step explanation:

The circles are what we are multiplying together

The square is the product

2* -5 = -10

2*7 = 14

To find the missing box

7* -5 = -35

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