Answer:
-44
Explanation:
first term is -4, second -9, third -14, fourth -19, etc.
there is constant difference (-5) between each two neighbor terms
you can use calculator by pushing the following buttons: -4-5========
the method is:
1) insert first term (-4)
2) insert a difference (-5)
3) push the "=" button 1 time less than the desired term number
So, if you must find 9th term, you push "=" button 8 times
after pushing buttons -4-5======== you get a result -44 on a calc