SubArea: Arithmetic sequencesLevel: AProject ID: 1003057903Accepted: 1Clonable: 0Easy: 1The 17th term of an arithmetic sequence is 77 and the common difference is 9. Choose the correct formula of calculation of the 5th term.a5=77−12⋅9a5=17−12⋅9a5=12⋅9−77a5=77−16⋅9a5=77+12⋅9