What is the 30th term of the sequence 7, 16, 25, 34,

First, find the difference between each number in the sequence ... 34 - 25 = 9. 25 - 16 = 9 and 16 - 7 = 9 ... So, there is a constant difference of 9 between each number of the sequence. To find the 30th term, you could expand the sequence out to 30 (which is a good way to check your answer, but tedious) ... So, simply add the 1st value of the sequence to the difference and multiply by 30 to find your 30th value ... 7 + 9 x 30 = 16 x 30 = 480.

Therefore, the 30th term is 480.