We can deduce that the graph is a negative parabola from
-0.002x^2. Therefore, the graph is increasing < 1250 and decreasing > 1250.
P(x) is increasing from
and decreasing from
.
Median is generally good if you have outliers (data points that are very far off from the majority of the points).
Mean can be used otherwise.
First, you'd solve the parenthesis, by multiplying the outside numbers with the ones on the inside. Then combine like terms on each sides. But, I solved this and it turns out that the answer would be 0, so....
8(c-9)=6(2c-12)-4c
8c-72=12c-72-4c
8c-72=8c-72
I mean they're equal I don't really know where to go from there. Hopefully I helped you out, even if it was a little bit.