Question

the first term of an ap is -7 and the common difference is 5 find the 18th term and the general term

Answer 1

Answer:

78

Step-by-step explanation:

18th term = a + ( 18-1 )d

= -7 + 17×5

= -7 + 85

= 78

I don't able to understand general term.

I think this answer may help you

Answer 2

Step-by-step explanation:

general term is 5n-12 and 18th term is 78