Madison is riding her horse around the outside of a circular arena. she knows 14 laps is 1/2 a mile what is the diameter of the arena

The diameter of the arena is 18.3 meters.

Step-by-step explanation:

        As,  14 laps = mile

        so, 1 lap = mile                               ( ∵14 × 2 = 28)

For the horse completing one lap it completes the perimeter of the circle.

            perimeter (P) =   mile

let diameter of that circle be represented as d,

                                  P=   × d

                            or,    = × d

                            or, d=

                              ∴ d= 18.3 meters.

The diameter of the arena is 18.3 meters.

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

hope i could someone! : )