Answer-
The inequality that models this situation is,

Solution-
The total money Charlie has = $27
He wants to order 6 sandwiches and a kid's meal of $3
Let us assume the price of each sandwiches is x.
So, the amount he will be spending for sandwiches is $6x
The total amount he will be spending is $(6x+3)
As he has only $27, so he can spend any amount less than or equal to 27
So the inequality becomes,

Therefore, the inequality that models this situation is
