Find the GCF 8x^3-12x^2+4x

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee