A function, f(x), represents the distance, in miles, that Sarah drives each hour, x.
1 answer:
In this situation 
will represent the time in hours. Since time cannot be negativ, we can rule out the second and the third answers. Also, Sarah in certain situations will drive for half an hour or more than one hour, like 0.5 hours or 1.3 hours. Since you can represent those numbers with integers, we can also rule out the second answer. So the only option left, is the fourth one.
We can conclude that the domain of the <span> function, f(x), that represents the distance, in miles, that Sarah drives each hour is </span><span>the set of all real numbers greater than or equal to zero.</span>
We can conclude that the domain of the <span> function, f(x), that represents the distance, in miles, that Sarah drives each hour is </span><span>the set of all real numbers greater than or equal to zero.</span>
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Answer:
Option 1
Step-by-step explanation:
To find the graph of the quadratic function, we find it's zeros.
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
.
This polynomial has roots such that
, given by the following formulas:
f(x) = x² - 4x + 3
This means that
So
Zeros at x = 1 and x = 3, that is, it crosses the x-axis at this values, so the graph is given by option 1.