If you understand this please answer ASAP I will give you a brainlest!!

Patel’s class voted on their favorite color. patel plans to make a circle graph to display the results. which statements are true about the circle graph patel can create? check all that apply.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b