A certain university in the United States has a student enrollment of 19,100. Mr. Hill knows the percentage of students
that are male and the percentage of students that are female.
To conduct the simulation, Mr. Hill has placed one hundred colored chips in a bag, using the appropriate percentages of
enrolled male and female university students. Red chips represent males, and yellow chips represent females.
Suppose a student reaches in the bag, randomly selects twenty chips, and estimates that 60% of the students are male.
How many yellow chips were in their sample?
a0 yellow chips

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

its totaly b

your welcome btw