What is the solution of the system?
5x+6y=20
9x+11y=32
•(28, -20)
•(28, 20)
•(-28, 20)
•(20, -28)

The correct option is 1.

Step-by-step explanation:

The system of equations is

          ....(1)

         ....(2)

Multiply equation (1) by 11.

          ....(3)

Multiply equation (2) by 6.

          ....(4)

Subtract equation (4) from equation (3).

Substitute x=28 in equation (1).

Therefore the solution of the given system of equations is (28,-20). Option 1 is correct.

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