Evaluate the expression when y =3. 5y - 1

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your 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?

We just started the introduction into circles and i have no idea how to do this.