Consider the first four terms of the sequence below. 1, -1/2,1/4,-1/8. what is the 8th term of this sequence? a. 1/256b. 1/128c. -1/256d. -1/128

D.

Step-by-step explanation:

The given geometric sequence :  1, -1/2, 1/4, -1/8

Here the first term=

Second term =, where r is the common ratio.

Therefore, the common ratio of the given sequence =

The nth term of the geometric sequence is given by ;-

Now, the 7th term of the geometric sequence is given by :-

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

b. f(x) = –√x + 3this is the correct answer