Que: Determine the interval and radius of convergence for the power series: ∞∑ₙ₌₁7ⁿ/n(3x−1)ⁿ⁻¹. a. (2x+1)/6 b. 7|3x−1| c. 5|x+1| d. 3!*|4x−9| Answer: 7|3x−1|