Hola me voy de regalare todos mis puntos​ ñ

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

Use a transformation to solve the equation. w/4 = 8 can you also leave a detailed explanation on how this equation = 32