Question

What are the next three terms in the sequence -3,6,15,24

Answer 1

33, 42, 51

Answer 2

I would find the difference between each number
6 - -3= 6+3= 9
15-6= 9
24-15= 9

it looks like each term is 9 more than the previous one
so the next term past 24 is 9 more than 24
24+9= next number
then add 9 to that number to get the next,
and so on...