GUYS I NEED HELP AGAIN Sophia has a shelf that is 51 over 2 inches wide. How many notebooks can Sophia arrange on the shelf if each notebook is 3 over 2 inches thick? (1 point)

Select one:

a.
38, because the number of notebooks is 51 over 2 ⋅ 3 over 2

b.
153, because the number of notebooks is 51 over 2 ÷ 3 over 2

c.
102, because the number of notebooks is 51 over 2 ⋅ 3 over 2

d.
17, because the number of notebooks is 51 over 2 ÷ 3 over 2
Whats the answer to that i am sorry its really hard to me

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297