Thank you for your question. The 743403-A Hook and Loop Polishing and Waxing Bonnet is for use with 7" polishers as noted within the product overview. We will work with Home Depot to update the title to provide better visibility.
Yes this pad will work with the makita 9237 , be very careful with the edges as it could burn the paint.
Yes you can use the polishing compound , be careful not to use too much as it will splatter when using.