Find the value of x if a, b, and c are collinear points and b is between a and c. ab=5,bc=3x+7,ac=5x−2

The value of x is 7.

Step-by-step explanation:

Given,

A, B, and C are col-linear points and B is between A and  C,

⇒ AC = AB + BC

We have, AB = 5, BC=3x+7,   AC=5x−2

By substituting the value,

⇒  

Hence, the value of x is 7.

4x and 6y

im not sure though

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