(Solved): Determine whether the sequence is arithmetic. If so, find the common difference. \[ 15,31,47,63, \l ...

Determine whether the sequence is arithmetic. If so, find the common difference. \[ 15,31,47,63, \ldots \] The sequence is not arithmetic. The sequence is arithmetic. The common difference is \( d= \) Determine whether the sequence is arithmetic. If so, find the common difference. \[ 16,6,-4,-14, \ldots \] The sequence is not arithmetic. The sequence is arithmetic. The common difference is \( d= \) Determine whether the sequence is arithmetic. If so, find the common difference. \[ 155,167,179,191, \ldots \] The sequence is not arithmetic. The sequence is arithmetic. The common difference is \( d= \) Find the \( 17^{\text {th }} \) term of an arithmetic sequence with \( a_{1}=40 \) and \( a_{19}=-176 \). \[ a_{17}= \] Find the number of terms of the finite arithmetic sequence. \[ 12,18,24,30, \ldots, 462 \] There are terms in the finite arithmetic sequence.