Answer:

And for this case we want to find the following probability:

And we can use the probability mass function given by:

And replacing we got:

Step-by-step explanation:
For this problem we can define the random variable of interest X as "the number of bxes with a cereal" and for this problem we can model the variable with the following distribution:

And for this case we want to find the following probability:

And we can use the probability mass function given by:

And replacing we got:

Notice -y in the first equation and y in the second equation. If you add -y to y, you get zero, and the y variable is eliminated. We add the equations to use the elimination method and eliminate y.
3x - y = 1
-2x + y = 2
Add equations to get
x = 3
Now that we have x = 3, we substitute 3 for x in the first equation and solve for y.
3(3) - y = 1
9 - y = 1
-y = -8
y = 8
Solution: x = 3; y = 8
Hey there :)
g ( x ) = 2x² - 11x
For g ( - 1 ) , you need to substitute - 1 in place of x
g ( - 1 ) = 2 ( - 1 )² - 11 ( - 1 )
= 2 ( 1 ) + 11
= 2 + 11
= 13 → Your answer
what you do first is you times the F which will equal -2 which will give you an answer then you subtract that answer by 10 * by 200 than you have your answer