What is the nth term of the sequence: 11,15, 18, 23, 27 ...

an = 11 + 4 (n-1)

Step-by-step explanation:

for an arithmetic sequence

an = a1+d (n-1)

where n is the term number

a1 is the first term

and d is the common difference

a1 = 11

d = 15-11 = 4

we are increasing by 4 each time

an = 11 + 4 (n-1)