Y=5x+2
4x-y=0
is (2,12) a solution of the system?

No

Step-by-step explanation:

For a point to be a solution of a system of equations, it has to work for both equations in said system. For this particular point, it doesn't fit into both.

12=5(2)+2

12=10+2

12=12

4(2)-12=0

8-12=0

-4=0

The second equation doesn't work out.

the answer is 175.4379

step-by-step explanation:

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