What exactly what i need to do for this problem i really don't understand this problem i confused

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers