How many articles were in the encyclopedia when it went live? 60, 30, 180, or 0?

If jobs arrive every 15 seconds on average, what is the probability of waiting more than 30 seconds?

Which of the following is the correct solution to the linear inequality shown below? y< 1/2x-4

You are studying for your final exam of the semester. up to this point, you received 3 exam scores of 67%, 68%, and 78%. to receive a grade of c in the class, you must have an average exam score between 70% and 79% for all 4 exams including the final.