Answer:
Option D. 
Step-by-step explanation:
Let
x------>the greatest possible value
we know that
If four people write the number zero, then the average will be

Every single one of those polynomials factors. When factored, your expression looks like this:

. When you cancel the like factors out, what you're left with is this:

. That means that b = 9, c = 1, and d = -2
For number 2. The pilot flew 4 circuits and in total by the 5th day he flew 14 right?
Y = -2/5x - 11 is the equations