Which of the following figures has reflected over the y-axis? 40 POINTS! PLEASE ANSWER!

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2