Find an equation of the tangent line to the graph of f at the given point , use a graphing utility to graph the function and it’s tangent line at the point , and use derivative feature of a graphing utility to confirm your results . PLS HELP !

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii