What is this im confuesed

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.