Question

the value of the 8th term is 78. The sequence is increasing by 10 at each step. Explicit equation: y=10x - 2, Recursive now = previous term + 10. Find the 20th term

Answer 1

In this question, it is given that the eighth term is 78 and the explicit formula is

$y=10x-2$

And the recursive formula is

$now = previous \ term +10$

And we have to find the 20th term . And for that, we put 20 for x in the explicit formula. That is

$y=10(20)-2 = 198$

Therefore on using the explicit formula, we will get 198 as the 20th term .