Answer:
The answer is on the paper. Hope it's correct :)
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.
2. $9.20 cause you multiply the price by the number of the sweets