Ineed your urgently(the reason there is 150 there because my teacher just told us the answer)

With the equation:

C = 25( p - 2)

You can substitute/plug in the values of "p" into the equation.

So when p is 6, you can plug in 6 for p in the equation.

C = 25(p - 2)

C = 25(6 - 2)

C = 25(4)

C = 100

And you continue to plug in values for p.

I'm not sure how you are suppose to write the equation into "RULE". You could write 25(6-2) or 25(4), unless they have already showed you how you are suppose to write 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