Question

Find the 89th term of the arithmetic sequence 25, 35, 45, ...

Answer 1

905

Explanation:

arithmetic sequence are in form

a(n)=a(0)+d(n-1)

a(0)=25

common difference: d=35-25=10

a(n)=25+10(n-1)

a(89)=25+10(88)=905