Correct answer is right down, increase gives sign +, drop or decrease gives sign -
3/6 = 6/x+3
3x + 9 = 36
3x = 27
x = 9
we know that
In a quadratic equation of the form
the discriminant is equal to

if
-------> the equation has two real number solutions
if
-------> the equation has one real number solution
if
-------> the equation has two complex number solutions
In this problem we have

so

substitute in the formula

----> the equation has two real number solutions
therefore
<u>the answer is</u>
the equation has two real number solutions
The fraction of the fence completed in one hour at a rate of
of the
fence in
hours is
.
<h3>How can the fraction completed in one hour be found?</h3>
The fraction of the fence completed in
of an hour = 
Required:
The fraction of the fence the student completes per hour;
Solution;
The time
of the fence is completed =
of an hour
Therefore;

The fraction of the fence completed per hour = 
Learn more about fractions here:
brainly.com/question/21339546