give correct option only

Given an arithmetic sequence where t1=5, and d=8, select the general formula from the options below O tn = 5n + 8 O tn = 8n - 3 Otn = 8+ (n -1)5 O tn = 3n - 8Given the following sequence: 5,15,45,135..., select the formula which represents the sequence from the options below: O tn = 5 - 3n Otn = 3.5n-1 Otn = 5 . 30-1 Otn = 5 + 3n-1Using the unit circle, what is the sin (30 )? Select your answer from the options below