Que: The explicit formula for the geometric sequence 3, 15, 75, 375,… is _______ a. 2*6! * 3ⁿ⁻¹ b. 3 * 5ⁿ⁻¹ c. 3! * 8ⁿ⁻¹ d. 7 * 4ⁿ⁻¹ Answer: 3 * 5ⁿ⁻¹