Answer the following word problems about related rates and curve tracing. Provide a complete solution. Thank you.

2. Ftelated Hates. The area of a circle is increasing at a rate of 2 inzfs. If the initial radius of the circle is i in, find the rate of change of the radius of the circle when the radius is 15 inches. Compute the radius of the circle after 313:1 seconds? 3. Curve Tracing. Given the function x) = 3x5 20x3, graph the function analytically and identifyr the values of .r where the function has the following: i. relative extrema ii. absolute extrema iii. points of inflection