After a history test with 20 questions, the teacher asks his students to write down the number of the questions that was the most difficult. He then asks a couple of his students to organize this data and inform the class on the results. Here are their results: then the students calculate the median and find it to be 4. Which of the following sentences best describes their teachers response to this report

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?