Find the slope of the ski run that descends 15 feet for every horizontal change of 24 feet

Arrange these numbers from least to greatest 3/5 5/7 2/9

Do you mind if you guys me with this question i’m on number 8

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)