Question

Find the sum of the first 14 terms for a sequence starting with 2, ending with 120 and common difference 2.



a.845



b.854



c.800



d.860

Answer 1

Answer:

854

Step-by-step explanation:

Use Sn=n/2(a+l)

Where n=14, l=120,and a=2

14/2(2+120)

=7(122)

=854