11x - 3 + 4x greater than or equal to 142 1/2

x > or equal to 9.7

Step-by-step explanation:

Don't let the inequality intimidate you.  Treat the > or equal sign like it is an equal sign.

Any thing you do on the right you must do on the left.

move 3 to other side

combine like terms

15x > or equal to 145.5

Divide both sides by 15

x > or equal to 9.7

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

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