Final answer:
To find the 55th term of an arithmetic sequence, use the formula An = A1 + (n-1)d, where An is the nth term, A1 is the first term, and d is the common difference. Plug in the values to find that the 55th term of the sequence 8, 24, 40, ... is 440.
Step-by-step explanation:
To find the 55th term of an arithmetic sequence, you can use the formula:
An = A1 + (n-1)d
where An represents the nth term, A1 is the first term, and d is the common difference.
In this case, A1 = 8 and d = 16 - 8 = 8.
Plug in the values to the formula:
An = 8 + (55-1)8
An = 8 + 54*8
An = 8 + 432
An = 440
Therefore, the 55th term of the arithmetic sequence 8, 24, 40, ... is 440.