Write an solve a real world problem that can be represented by

15x - 20 < or equal 130

U were given $ 130 as a birthday gift. u first had to pay ur bro back $ 20 that u owed him. u then went to the clothing store and stocked up on t-shirts because they were on sale for $ 15 a piece. And now ur broke. How many t-shirts did u purchase?

15x - 20 < = 130

15x < = 130 + 20

15x < = 150

x < = 150/15

x < = 10 ... so u bought 10 t-shirts