Question

17 a) Find the nth term of the arithmetic sequence 1,11,21,31,41....
b) Find the 100th term.​

Answer 1

Explanation:

use the formula a+(n-1)d

a=(first value in sequence)=1

n=100(the term you are finding)

d=(difference)(it is increasing by 10

substitute the value in the formula

1+(100-1)10

100th term=991