The function represents an upside down u parabola. Hence the negative. On a parabola, we know the vertex is located here: |dw:1439328499546:dw|
We know that the vertex is at maximum and not minimum
In context of the problem, what do you think the vertex represents based on the observation of this graph?
Im not sure. Maybe the largest about of games sold?
It is the largest profit
the amount of profit gain is located in the y-axis. The vertex in max is located on the highest y-axis. Nothing goes further than that.
ok what next
Can you answer the second part now?
What are the x intercepts?
number of games sold?
Yes, but what are the profits in the number of games sold?
Take a look at the graph.
X-intercept is where the graph touches the x-axis. So what is y when a point is on the x-axis?
agree with the above but I think A is incomplete unless I missed that you also calculate the values