Answer:
19.35% probability that five will have completed four years of college
Step-by-step explanation:
For each individual chosen, there are only two possible outcomes. Either they have completed fourr years of college, or they have not. The probability of an adult completing four years of college is independent of any other adult. So the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
28% of individuals
This means that 
For a sample of 15 individuals, ages 25 and older, what is the probability that five will have completed four years of college?
This is P(X = 5) when n = 15. So


19.35% probability that five will have completed four years of college
Answer:
is the number of quarters and
is the number of dimes
Step-by-step explanation:
we know that


Let
x-----> the number of dimes
y------> the number of quarters
we know that
-----> equation A
----Isolate the variable y
-----> equation B
Substitute equation B in equation A
Find the value of y


therefore
is the number of quarters and
is the number of dimes
Is there more to questions. you can solve it with little info
So you would need to add:
500$ + 80$ + 175$ = 755$
Since John paid 900$ then you would subtract how much he is buying it for from how much Davis spent to fix it
900$ - 755$ = 145$ (on profit Davis earned)