Find an equation for the perpendicular bisector of the line segment whose endpoints are (-1,6) and (7,2).

Step-by-step explanation:

First, lets find the mid-point between those two points:

Now, lets find the gradient of the perpendicular bisector:

Next, we can find the equation:

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