A. 5500x(1+5%)=$5775
b. 5775x(1+5%)=$6063.75
Those are your answers.
Y= -2x+3. This is the equation of the line.
Yes, your work is correct.
The diagram does illustrate x²+6x+9=72. This is also represented by
(x+3)² = 72
We can take the square root of both sides:

When we evaluate this, the answers are x = -11.5 or x = 5.5.