Question

Find the sum of the first 9 terms of the sequence. Show all work for full credit. 2, -7, -16, -25, ... (2 points)

Answer 1

2-(-7)=9

(-7)-(-16)=9

For each of the terms, the number will decrease by 9. The first 9 terms will be: 2,-7,-16,-25,-34,-43,-52,-61,-70. The sum of these numbers will be - 306.