From the definition of conditional probability,

and by the law of total probability,

In other words, each cell in the grid left of and above the total column and row represents the joint probabilities (e.g.

). So,
If the first term of the function is negative then the parabola will open down and it has a maximum value.
If the first term of the function is positive then the parabola will open up and it has a minimum value.
In the case of your example the parabola will open down and will have a maximum value.
hope this helps :)
It can’t be a mixed number
Answer:
2x = 2x
Step-by-step explanation:
2x + 6 = 3x + 6 - x
2x = 3x - x(cancel equal terms)
2x=2x