Photo attached please help with answer

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.

Hello can you me find all the products

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?