I need help with my math question

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.

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect