Question

Write down in terms of n, an expression for the nth term

of the following sequences:
b) 9 11 13 15 17

Answer 1

9 11 13 15 17

first term (a) = 9

diffrence (d) = 11-9 = 13-11 = 2

we know

a + (n-1)d

9+(n-1)2

9+2n-2

7+2n

2n + 7

2n + 7 is the sequences of 9 11 13 15 17 for nth term