We have the following function:
F (t) = 2 * (1 / (2 ^ (3 * t)))
We must evaluate the value of t = 1
We have then:
F (1) = 2 * (1 / (2 ^ (3 * 1)))
Rewriting we have:
F (1) = 2 * (1 / (2 ^ 3))
F (1) = 2 * (1/8)
Simplifying we have:
F (1) = (1/4)
Answer:
F (1) = (1/4)
option D