List three methods of assigning probability

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.