ANSWER
4 roots.
EXPLANATION
The given polynomial function is

This is a fourth degree polynomial.
According to the Fundamental Theorem of Algebra, an nth degree polynomial has n roots.
This roots include both real and complex roots.
Also repeated roots or roots with multiplicity greater than one are counted as distinct.
Since the given polynomial function is a fourth degree polynomial, the Fundamental Theorem of Algebra, says that this polynomial has 4 roots.
Answer:
The opportunity cost is $28.600
Step-by-step explanation:
The opportunity cost is the value of the best alternative that is rejected. If Susan goes to college loses what he would win from her salary minus any potential gains from investment in education in college. It can be found as this:
Expenses: 8000 + 900 + 2500 = 11.400
So OCost is: 40.000 - 11.400 = 28600
She would lose 28.600 of income per year because of going to college.
Answer:
You would end up with X= -2, y= 2
And they would intersect at point (-2,2) on a graph :)
Did the question give you any lengths of the sides?