There were 5 of the 15 in the simulation that used a coupon. To find the probability you just divide 5 by 15
P(=>4) = 5/15 = 1/3 - probability of 4 or more
Multiply .029 and 46. Add the product to 46.
Start on -7 since it is the y intercept(b). 4/1 is the slope. So from seven you would go up 4 right 1.
Question 4 is d question 3 is c