Question

If an= 2n-1 then 4 the term is

Answer 1

Answer:

$if \: \: frist \: term \: is \: n = 1 \: then a = 1 \: then \: fourth \: term \: is \: a +( n - 1)d \: = 1 + 3 \times 2 = 7$

Answer 2

Step-by-step explanation:

put n=4

a4=2*4-1

a4=7

I hope you will understand it