Then
Now find
Im not quite sure how to do this.. I am instructed to find the value of the 11th term of an arithmetic sequence where t1=-13 and the sum of the first 1 terms is -33. Now I thought I could use the equation -33= (-13+tn/2)11
but that is either not the right approach or I am simplifying it wrong(both likely). Any help is very appreaciated