Answer: The dependent variable is the price, as the number of tickets sold goes up, the price is effected by this. That being said, the price of the tickets is dependent on the amount sold.
Hope this helps ^_^
Answer:

Step-by-step explanation:
we know that
The graph of the figure represent a vertical parabola open upward
The vertex represent a minimum
The vertex of the quadratic equation is the point (h,k)
The range of the quadratic equation is the interval for y [k,∞)

Looking at the graph
The vertex is the point (0,-6)
therefore
The range is the interval [-6,∞)

I believe 20 is your answer. Tell me if I’m wrong.
Let's give the variable that you are trying to answer for a symbol. Let's call it X.
X = the amount of money both Greg and Thomas had in October
We know that in November, Greg added $120 to his account. So, Greg's account has: X + 120
We know that Thomas increased the money in his account by 20%, so Thomas' account has: X + 0.2X, or 1.2X
We know that these two amounts are equal:
X + 120 = 1.2X
Solve for X:
X + 120 - X = 1.2X - X
120 = .2X
120 / .2 = .2X / .2
600 = X