The Function having highest Degree of Four given here is :

As the given function has highest degree of four, it has maximum of four roots.
As complex and Irrational root occur in pairs, so There are many possibilities
1. Two Complex or Irrational + Two Real
2. Four real roots
3.All roots are complex or irrational
By looking at the options described below, it means it has four real roots.
It will cut X axis at four points.
With the help of Desmos you can directly find the solution of this problem, but without desmos Graphing, we first have to check by Taking different points on the curve whether graph of function described here is correct or not, i.e by method of increasing and decreasing formula of a function.The method to check is
If there are two points on the curve i.e 
1.
Increasing Function.
2.
Decreasing Function.
Option (4) is true .
2x^2-5x-3
This is the answer I believe, I apologize if it’s incorrect
Answer:
x can be cancelled
Step-by-step explanation:
we are given

Firstly, we will factor numerator and denominator
and then we can factor it


now, we can factor denominator


now, we can replace it

we can see that
both terms are having x common
so, x can be cancelled
So,
x can be cancelled
Katie travels at 0.05 mi/ min