Question

if a=20 and d=3 find tn​

Answer 1

Answer:

tn=17 +3n

Step-by-step explanation:

$a = 20 \\ d = 3 \\ tn = a + (n - 1) \times d \\ tn = 20 + (n - 1) \times 3 \\ = 20 + (3n - 3) \\ =17 + 3n \ \\ tn = 17 + 3n$