Aquarter back completes 44% of his passes. we want to observe this quarterback during one game to see how many pass attempts he makes before completing one pass.
a. what is the probability that the quarterback throws 3 incomplete passes before he has a completion?
b. how many passes can the quarterback expect to throw before he completes a pass?
c. determine the probability that it takes more than 5 attempts before he completes a pass.
d. what is the probability that he attempts more than 7 passes before he completes one?

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

my answer got deleted but it's a

step-by-step explanation:

other answer is correct. i had used the radius of the radius somehow. a website: