Answer:
50 stamps from chaper books.
Step-by-step explanation:
5 x 5 = 25 (stamps for read the chapter books)
5 x 5 = 25 (extra stamps for reading the chapter book)
25 + 25 = 50 (stamps total for reading chapter books.)
13 is the answer for ur question
Sum of the geometric sequence:
S n = a * ( 1- r^n ) / ( 1 - r )
a = - 4 ( the 1st term of the sequence ), r = - 6, n = 7
S 7 = (- 4 ) * ( 1 - ( - 6 )^7 ) / 1 - ( - 6 ) = ( - 4 ) * 279937 / 7 = - 159,964
Answer: B )
I believe the answer would be a because its the one that doesn't change<span />