PLEASE HELP! Find the median of the stem and leaf plot

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review