what is the 30th term in the following sequence: 3, 6, 9, 12, 15

Answer 1

There is also a formula for arithmetic progressions. It would look like this.

x (30th term) = 3 (first term) + (30-1)3 (common difference between terms.

Answer 2

The sequence is in multiples of 3, so the 30th term should be 90 (3x30=90).