Solve the Problem $D$ , in Feet, It Takes a Car Travelling At

Multiple Choice

Solve the problem.
-The distance $D$ , in feet, it takes a car travelling at $x$ mph to come to a full stop after hitting the brakes is given by $\mathrm { D } = 1.24 \mathrm { x } ^ { 2 } + 0.067 \mathrm { x }$ . What is the stopping distance for a car travelling at $50 \mathrm { mph }$ ?

A) $186 \mathrm { ft }$
B) $3100 \mathrm { ft }$
C) $124 \mathrm { ft }$
D) $3103.35 \mathrm { ft }$