Question

The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.

Answer 1

Does this look familiar?\[a _{n}=a _{1}+(n-1)d\]where \[a _{n}\]is the nth term\[a _{1}\]is the first term\[n\]is the position of the nth term, and\[d\]is the common difference