general term of an arithmetic sequence

Question

find a 150 when a,=-30,d=5

Answer 1

In arthemetic sequence a n = a+(n-1)d

a is first term and d is common difference.

Here a = -30, d = 5

a 150 = a+149d

a 150 = -30+149*5

a 150 = -30+745

a 150 = 715