Find out how long it takes a $2900 investment to double if it is invested at 9% compounded quarterly. Round to the nearest tenth of a year.

There are 12 boy and13 girls in a class. if the teacher randomly chooses a student’s name out of a hat what is the probability it will be a girl

Franco wants to double the volume of the cone. what should he do?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=