Find the measure of BEK

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?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Match the one-to-one functions with their inverse functions.