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