Question

The first term of a sequence is -5, and the common difference is 10. What are the next three terms?

Answer 1

Let the first term be a

Given, a = -5

d = 10

So, we need to find next three terms i.e. second, third and fourth terms.

$Using \: formula \: = > a_{n} = a + (n - 1)d$

$a _{2} = - 5 + (2 - 1)10 \\ = - 5 + 10 = 5 \\ a _{3} = - 5 + (3 - 1)10 \\ = - 5 + 20 = 15 \\ a _{4} = - 5 + (4- 1)10 \\ = - 5 + 30= 25$

Hope this helps :)