Question

PLEASE PLEASE HELP ME WITH THIS

Answer 1

the expanded form is D

number of terms = numb top - numb bottom + 1

n = 5 - 1 + 1

n = 5

Sn = n/2 ( a + L )

S5 = 5/2 ( 2 + 242 )

S5 = 5/2 ( 244)

S5 = 610