I think c .. I already took a course .. and the test had that question.. I cant remember the answer though
Answer:
Answer is f(3)
Step-by-step explanation:
i did test
Answer:
0.5 < x < 16.5
Step-by-step explanation:
8.5 - 8.0 < x < 8.5 + 8.0 =
0.5 < x < 16.5
<em>Hope that helps! :)</em>
<em></em>
<em>-Aphrodite</em>
This is a geometric sequence with first term 1 and common ratio -1/2. r=-1/2.
a(n) = a(1)*(r)^(n-1).
Check: If n=2 our formula must return -1/2. Does it?
a(2) = 1(-1/2)^(2-1) = (-1/2)^1 = - 1/2. Yes.
a(3) should be 1/4. Is it? a(3) = (-1/2)^(3-1) = 1/4 Yes.
Then a(8) = (-1/2)^(8-1) = (-1/2)^7 = -1 / 2^7 = -1/128 (answer)
