What is the area of a circle if d =7cm

Which rational number could be graphed between -4 and -5

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?

Ineed to know the answer to this algebra question.