Does anyone know the answer bc I've done the math problem multiple times and can't figure it out?

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

What is the approximate mark up percentage rate before m equals $1740 marked up from p equals $19,422

As a salesperson you get $53/day and $3.75/ each sal you make. if you want to make at least $128 in one day, how many sales would you need to make? a 10b 15c 20d 25