I need help with 43. . . .

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?

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.