Answer:

And we can use the probability mass function and we got:
And replacing we got:

Step-by-step explanation:
Let X the random variable of interest "number of graduates who enroll in college", on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
We want to find the following probability:

And we can use the complement rule and we got:

And we can use the probability mass function and we got:
And replacing we got:

Answer: If you have solved to get x=6 just plug that back into the problem. You get 50
Step-by-step explanation:
Not sure!!!!!;( next time put a pic
Since it is times 7 each time it will be 16807