Please help (due in 8 minutes!! have a blessed day/night)

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.